seedlings next to each other in small square plots

faq.

Plagron wants to help you to make a success of every culture. On this page you can find frequently asked questions and the answers that come with it.

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servicedesk
growstyles
We have divided all our substrates, fertilisers and additives into five categories, each with a unique color: 100% NATURAL (green), 100% TERRA (red), 100% COCO (orange), 100% HYDRO (blue) and UNIVERSAL (purple). You will see these colours on every single item, from the packaging to the catalogue. The good thing about this classification is that you start by choosing a grow style (100% NATURAL, 100% TERRA, 100% COCO or 100% HYDRO), each with its own substrates and basic nutrient. You can then infinitely combine the products from this grow style with all the additives (UNIVERSAL).
Which grow style suits you best is completely up to your own wishes and needs. On the grow style list we have mentioned the benefits of each grow style. Perhaps this makes choosing easier for you? Do you still need help? Then use the handy Plagron Product Selector. Based on the selection of three choices you can decide which substrate suits your needs the best.
Every grow style has its own colour to make it easier to combine. You can recognise a grow style by its own typical colour: 100% NATURAL (green), 100% TERRA (red), 100% COCO (orange), 100% HYDRO (blue) and UNIVERSAL (purple). Products with the same label colour all belong to the same grow style.
Our advice is to stick to products from one grow style. The combination of these products ensures an optimum yield. You can combine all UNIVERSAL products with products from all other grow styles. UNIVERSAL products are universally applicable.
This seems contradictory because all UNIVERSAL products can be combined with products from all culture styles. However, when you choose the recommended three additives, we guarantee you an optimal yield.
The oval logo on the packaging of the 100% NATURAL products and some UNIVERSAL products is the CU logo. Products that carry this logo are certified by Control Union. These products are 100% organic.
When you want to grow outdoors, we recommend our 100% NATURAL grow style. These products are ideal when you prefer a quick end-result with the best smell and taste. All of our 100% NATURAL substrates and fertilisers can be recognised by the CU logo. This logo indicates that the product is suitable for organic agriculture under Regulation (EC) 834/2007.
Water requirement depends on the plant itself, the type, the size, age and general health of the plant. These factors all have an influence on the water requirements of the plant. If you want to know when to give your plants water, you should stick a finger into the potting soil. By doing so you can feel how moist the soil is. The top layer will dry out the fastest because of the contact with the air. If you look several centimeters below the surface you will have a better indication of the moisture in the soil.
An opened product has a guaranteed shelf life of 6 months. When a product has not been opened, it will remain stable for 2 years. To determine when your product was manufactured, you can e-mail the batchnumber of your product to our servicedesk.
UNIVERSAL
All of Plagron's UNIVERSAL products carry a purple label. The products in the UNIVERSAL category are additives. The UNIVERSAL products are sub-divided into boosters, enhancers, pH controllers, substrate complements and germination products. The icons on the products indicate the sub-category. All the UNIVERSAL products can be infinitely combined with products from the four grow styles.
The packaging shows which UNIVERSAL products are organic. The CU logo shows which additives are organic. This logo indicates the suitability of the product for organic agriculture and horticulture in accordance with Council Regulation (EG) 834/2007.
Once a product has been opened, it has a guaranteed shelf-life of six months.
green sensation
Yes, this is no problem at all.
Green Sensation should be added in a ratio of 1: 1000 to (1ml Green Sensation per liter of nutrient water). This will increase the EC value by 0.5 uS/cm. Keep this in mind if you add the basic nutrition. Give less basic nutrition, so that the total EC level is not too high.
No, because all of this is already included in Green Sensation, you don't have to use a bloom stimulator, enzymes or PK fertiliser.
Green Sensation provides super fast absorbable phosphorus and potassium.
We do not believe in over-fertilisation with phosphorus and potassium. This won't benefit the quality of the plant. That's why our Green Sensation contains a lot of trace elements and micronutrients.
This is because Green Sensation is actually four products in one. You only need to buy Green Sensation and you will receive four products. Just the price of the quantity of flowering enhancer in Green Sensation is higher than the cost of a bottle of Green Sensation. Basically you get the other three products for free.
Yes, the formula is improved so that there are many advantages compared to the first generation Green Sensation. The 'new' Green Sensation is less thick, and therefore easier to use and more soluble. The concentration of 1: 1,000 is exceptionally high, so you can create as many as 1,000 liters of water 1 liter of Green Sensation. If you would measure the EC value, the 'old' Green Sensation is 0.3 mS/cm, and the new 0.55 mS/cm.
We recommend you use Sugar Royale once a week. As you can see in our Grow Schedules you can give Alga Bloom and Green Sensation every time you water the plant from the fourth (Green Sensation) and fifth (Alga Bloom) week of flowering.
No, Green Sensation is not a leaf fertiliser, and must be mixed with the nutrient water.
Green Sensation is not an organic product, but will not disturb your soil. It won't be a problem if you use it in organic farming.
power roots
No, Power Roots stimulates the root development of rooted plants.
You ideally want the plant to develop enough roots early in the flowering phase, so the plant can utilise its energy to produce flowers. Stop giving Power Roots from the third week of flowering.
Power Roots contains many organic ingredients. These ingredients can start to spoil the solution after 48 hours.
The pH value is irrelevant for Power Roots. Keep to the pH value recommended for your substrate.
pure zym
Yes, but it's not necessary. If you grow using 100% NATURAL there are already micro-organisms in the soil that create enzymes.
No, Green Sensation contains all the necessary enzymes.
Give Pure Zym at each watering session up to the end of the third week of flowering.
Pure Zym can be stored in a solution for up to 48 hours. After this, Pure Zym may spoil.
vita race
Vita Race can be combined with every grow style, provided you spray Vita Race onto the leaves. If Vita Race is applied via irrigation, water onto soil only.
Vita Race contains high quality nutrients, with NPK 0-5-8 and iron 8%. However, a foliar fertiliser stimulates nutrient absorption via the roots, so do not administer less nutrition via the irrigation water.
The leaves mainly absorb the fertilisers during the day, so the best time to spray Vita Race is at the start of the day.
Vita Race can be stored in a solution for up to 48 hours. After this, Vita Race may spoil.
Yes, these two products can be combined without any problems.
Vita Start is an organic vitamin spray for seedlings, cuttings and mother plants. It is extremely suitable for young plants and stimulates plant growth. Vita Start ensures that plants develop a large and strong root system, build up good resistance and enables faster nutrient absorption. This accelerates cell division and creates more branches and shoots. For a mother plants this means considerably more cuttings are produced. Vita Race is an organic foliar fertiliser for plants. It can be sprayed onto the leaves of a plant from week one in the growth phase until week three of the flowering phase. Vita Race contains amino acids, trace elements, natural mineral and essential natural hormones that accelerate plant growth and prepare for flowering. As the name suggests, this product will help win your race against time!
Yes, possibly. When water dries quickly it causes white spots on the plants. This can also happen if the solution contains Vita Race. The white spots are harmless.
start up
Yes, this is not a problem provided Start Up is not stored in the solution for longer than 48 hours. Stop using Terra Grow, Power Roots and Vita Race if you are using Start Up. Do not use Start Up if you grow on 100% COCO or 100% HYDRO.
There is no point, since Start Up already contains these products.
No, Start Up can only be used with soil-based substrates.
No. Start Up is a combination of Alga Grow, Power Roots and Vita Race. This means you do not need any other form of nutrition in the plant's growing phase.
Start Up can be stored in a solution for up to 48 hours. After this, Start Up may spoil.
You can start using Start Up as soon as the cuttings have been planted. Start Up is a growth nutrient with a root stimulator and can only be used during the growth phase of your plant. Use Start Up weekly with a dose rate of 7 ml/litre of water. Stop using Start Up as soon as flowering starts.
sugar royal
Yes, Sugar Royal works differently to the flowering stimulator in Green Sensation.
No, Green Sensation contains a number of important extra ingredients. For instance, the phosphorus and potassium in Green Sensation are organically bound. This is not the case in PK 13-14. Sugar Royal also works differently to the flowering stimulator in Green Sensation.
We advise using Sugar Royal once a week. As our Grow Schedules show, you can give Alga Bloom and Green Sensation every irrigation session from the fourth (Green Sensation) and fifth (Alga Bloom) week of flowering.
Yes, you can spray the leaves with Sugar Royal and combine it with Vita Race. We advise you not to spray the leaves and flowers with the product from the third week of the flowering phase. Otherwise, these products may influence the taste of the end product.
Yes, these two products can be combined without any problems.
Sugar Royal contains many organic ingredients. These ingredients can start to spoil the solution after 48 hours.
vita start
Yes, Vita Start works well on flowering plants. However, Vita Start has a strong smell and taste, which can affect the smell and taste of the final product.
Yes, you can add Vita Start to the irrigation water if you grow in soil. The amino acids in the product are absorbed very rapidly via the leaves, and less quickly via the roots.
The effects of Vita Start have been extensively tested and proven in agriculture and horticulture. Remarkably, certain varieties of plants had 80% less thrips infections. Vita Start has the preventive effect of strengthening the plant so it is less attractive to insects.
Vita Start stimulates the plant to branch. This creates more cuttings on the mother plant more quickly. Vita Start also boost the plant's immunity and creates extra vigour.
Vita Start can be stored in a solution for up to 48 hours. After this, Vita Start may spoil.
Vita Start is an organic vitamin spray for seedlings, cuttings and mother plants. It is extremely suitable for young plants and stimulates plant growth. Vita Start ensures that plants develop a large and strong root system, builds up good resistance and enables faster nutrient absorption. This accelerates cell division is accelerated and creates more branches and shoots. For a mother plants this means considerably more cuttings are produced. Vita Race is an organic foliar fertiliser for plants. It can be sprayed onto the leaves of a plant from week one in the growth phase until week three of the flowering phase. Vita Race contains amino acids, trace elements, natural mineral and essential natural hormones that accelerate plant growth and prepare for flowering. As the name suggests, this product will help win your race against time!
fish force
Yes, but please note that Fish Force has a pungent smell of fish.
Using Fish Force in the flowering stage only makes sense if you have noticed a nitrogen deficiency.
The best time to spray Fish Force is if you notice your plants have turned yellow because of a nitrogen deficiency and if you want to strengthen your plants with high quality, organic amino acids.
No, Fish Force can only be applied in irrigation water on soil-based substrates. Fish Force can be applied as a spray on all substrates.
Fish Force can be stored in a solution for up to 48 hours. After this, Fish Force may spoil.
pk 13-14
No, this combination can only be absorbed by certain varieties of plants grown in professional, climate controlled conditions with a high light intensity. However, in 99% of the cases, problems will be experienced.
You can combine PK 13-14 with Pure Zym, Sugar Royal and one of Plagron's four basic nutrients.
Use PK 13-14 at every irrigation session from the fourth week of the flowering phase up to one week before harvest. Dose at a rate of 0.5 to 1 ml/litre. The PK 13-14 dose depends on the type of plant, climate and growing method.
Yes. In all mineral fertilisers, the pH value determines the absorption by the plant. We advise you to adjust the pH value so the PK 13-14 can be absorbed well.
Yes, PK 13-14 is transparent. We sell various additives of different colours.
ph plus
Yes,this works. However, it is best not to do so since this will alter the NPK value of your fertilisers.
The amount of pH Plus in your solution depends on the water quality and how much nutrient is used. This constantly changes the amount of pH Plus required. You should use a pH meter or pH strips.
ph min
Yes, this works. However, it is best not to do so since this will alter the NPK value of your fertilisers.
The amount of pH Min in your solution depends on the water quality and how much nutrient is used. This constantly changes the amount of pH Min required. You should use a pH meter or pH strips.
lemon kick
If you grow organically, you do not want to use phosphoric acid or nitric acid, because this destroys the important micro-organisms in the soil. In addition, phosphoric acid or nitric acid will alter the NPK value, while Lemon Kick will not.
Yes, Lemon Kick can be used on all substrates.
Yes, Lemon Kick does not harm the micro-organisms in the soil.
calcium kick
No. Plagron potting soils are sold with enough calcium for at least one harvest.
No. We advise only adding Calcium Kick to potting soils.
Yes. If you want to re-use your soil after growing it is actually important to use Calcium Kick to upgrade the soil. Dose at a rate of 2.5 to 5 kg/ 1000 litres of potting soil. Calcium Kick restores the pH level of the soil after growing so the plants can re-absorb all the necessary nutrients.
mega worm
There's no reason to do so. All Plagron potting soils, except Lightmix, already contain Mega Worm. It only makes sense to mix it with re-used soil, or with garden soil if you grow outdoors.
The worms are removed from Mega Worm with a sieve so they can decompose and convert a new batch of organic material. The survival chance of worms during transport, and during growing in pots, is also very low.
Yes and no. Mega Worm contains hardly any directly absorbable nutrients, but it does have a lot of micro-organisms. They can convert organic components in your soil into the plant absorbable fertilisers. This forms many high quality nutritional elements such as vitamins, antioxidants and enzymes. They nourish and stimulate plant growth.
Yes, Mega Worm and Bat Guano can be used to upgrade your soil. You can decide the ratio yourself so you can influence the taste and smell of the end product. Would you like some help determining this ratio? We advise you use the following ratio for a good taste and smell. Mega Worm: 10% - 20% Bat Guano: 2.5% - 5%. Don't forget to use Calcium Kick to upgrade the soil. Dose at a rate of 2.5 to 5 kg/1000 litres of potting soil. Calcium Kick restores the pH level of the soil after growing so the plants can re-absorb all the necessary nutrients.
No, that's not necessary. Supermix already contains Mega Worm (worm castings).
supermix
Yes, but it only makes sense adding Supermix if you have already harvested a crop from this soil. These soils have maximum fertilisers if they are unused.
No, Supermix can only be added to soil.
Use a measuring scoop or beaker.
Supermix is an organic fertiliser from the UNIVERSAL line. Terra Grow and Terra Bloom are from the 100% TERRA grow style and are mineral nutrients. For optimal results, it is best to combine Supermix with products in the 100% NATURAL grow style.  Supermix requires micro-organisms in the soil. These can be found in the potting soils in the 100% NATURAL grow style. Mineral nutrition (such as Terra Bloom and Terra Grow) is not beneficial for these micro-organisms, so it combines less well with Supermix.
This is not necessary. Supermix already contains Mega Worm (worm castings) and Guano Peru (sea bird droppings).
Supermix on its own ensures outstanding soil quality, so additional nutrition is not really necessary. This does depend on the type of plants you grow and their nutrient requirements. Monitor your plants closely. When the leaves at the base of the plant start to turn yellow, this is a sign that you should give some foliar fertiliser. Supermix can best be combined with our Alga Bloom. Just like Supermix, this product is suitable for organic agriculture and horticulture.
bat guano
Yes. Our Batmix only contains Bat Guano and worm castings. The worm castings do not contain any nutrients. If you use a pot twice as large as usual, it will last for a complete flowering phase.
Yes, Lightmix and Promix can be enriched with 5% Bat Guano. The other mixes are too rich to be added to.
Outdoor soil already contains some nutrients and Bat Guano acts as an additive. The main purpose of Bat Guano in potting soil is to fertilise the soil. Plants grown indoors in the Netherlands have a higher nutrient requirement because they grow under ideally created conditions.
Yes. We advise mixing Bat Guano with soil, if the soil outdoors is already light and airy. If the soil is clayey, we advise using Batmix.
Yes. Bat Guano and Mega Worm can be used to upgrade your soil. You can decide the ratio yourself so you can influence the taste and smell of the end product. Would you like some help determining this ratio? We advise using the following ratio for a good taste and smell. Mega Worm: 10% - 20% Bat Guano: 2.5% - 5% Don't forget to use Calcium Kick to upgrade the soil. Dose at a rate of 2.5 to 5 kg/1000 litres of potting soil. Calcium Kick restores the pH level of the soil after growing so the plants can re-absorb all the necessary nutrients.
This is hard to say, because it depends on the type of soil, the plant, the amount of plants per square meter and the growing climate. Keep a good eye on your plants. If the lower (older) leaves start turning yellow, it's an indication of nitgrogen deficieny. This means it's time to add nutrition.
perlite
Yes, Perlite is a complete hydrologic substrate in it's own right.
The difference is very slight. We do not think that Perlite is necessary, as we use very airy peat in our potting soils. Some growers instinctively prefer to use potting soils with Perlite. Soil mixed with Perlite tends to hold moisture for longer. This can be an advantage if you grow at high temperatures or with a high light intensity.
seedbooster plus
Give Seedbooster Plus up to one week after rooting to protect the young plants.
There are many different methods that all have their own advantages. A proven method is to soak the seeds first for 12 hours in water that's 23 degrees Celsius with Seedbooster Plus. Then plant the seeds in a coconut or mineral wool plug watered with the Seedbooster Plus solution. Place this under a fluorescent lamp at 23 degrees Celsius. Increase the light intensity as soon as the seeds germinate so they do not grow 'leggy', but develop into strong, wide plants. 
seeding & cutting soil
Yes, this is possible. But the mixtures are actually too airy to ensure a good start for the plants.
You can plant young plants in rich soil once they have developed a strong root system. This usually takes about 14 days from seed or an unrooted cutting.
seedbox
Yes, you can. A greenhouse and plugs are ideal for this. However, Seedbooster is not a root hormone, so a root hormone should be used as well.
Yes, this is our Seedbooster Plus.
No, that is not necessary. The coco plugs have a buffered pH value.
100% NATURAL
Plagron Allmix, Batmix, and Royalmix are all soil mixtures that are pre-fertilised for 6 weeks. They have been specifically developed for the combination with the 100% NATURAL products. Choose Plagron Allmix when you want to grow in high temperatures, with a lot of intensity, or in small pots. Choose Batmix if you want to go for the best quality and Royalmix if you want to go for the highest yield and a natural fruity flavour. Are you an experienced 100% NATURAL grower and do you want as much control over the nutrient, choose Promix with which you have to feed your plants yourself from day one.
This is not necessary as organic soil already contains microbes that produce enzymes.
Yes, that's possible if you use Plagron Allmix, Batmix or Royalmix. Grow your plants in a relatively small pot. Once the plant enters the growth phase you will have to plant it in a pot that's at least twice as big as normal. At least 15 liters. This will get you through the flowering phase until week 10.
No, you never have to leave nutrient water before administring it to your plant.
When you choose products from our 100% NATURAL Grow Style you are growing organically and you don't have to measure the pH and EC value. An EC meter can't measure all organic fertilisers. An EC meter can’t measure all organic fertilisers. The biological life in the soil of the 100% NATURAL grow style will ensure that the nutrients remain available for your plants and will help to stabilise the pH value. That’s why you don’t have to measure pH values.
Buying a tensiometer can be useful. With this meter you can see if you plant is well watered so that the soil is not too dry nor too wet. This has much influence on the biological life in the soil. In addition, the impact on the uptake of water (and food) by the roots and thus the growth and flowering of your plants. Good air / water ratio is essential for a rapid development of a plant and therefore a good end result.
No, this is not necessary. If you grow with our 100% NATURAL products it's not the pH-value but the soil life that determines the absorption of the fertiliser. So it's not necessary to to measure the pH value.
batmix
Batmix is fertilised for about six weeks. When you need to start giving nutrients depends on conditions such as the amount of light per square meter, the type of plant and other factors. When you notice the leaves starting to yellow after about six weeks, you can start to add nutrients.
Because of its fertilisation through Bat Guano, Batmix gives your plants a strong taste and smell. You should choose Batmix when quality is the most important to you. Royalmix contains a selection of natural solid fertilisers that release the nutrients when the plant needs them. Because of this you can expect a higher development and thus a higher yield. Choose for Royalmix when you want to grow organically and when you want to go for the highest yield with a natural fruity taste. Plagron Allmix has a finer texture than Batmix and Royalmix. Because of this it can better hold more water. This makes Plagron Allmix the right choice if you want to grow organically, in high temperatures, small pots or with high light intensity. Furthermore Plagron Allmix is ideal if you plan to reuse your soil and want to upgrade it with Supermix.
No, combined with our 100% NATURAL Grow Style you don't have to regulate the pH value.
Batmix is maximally fertilised. For young plants that are not yet accustomed to high EC-values, it may be difficult when they are suddenly planted into a maximum fertilised soil. Therefore we recommend to flush the Batmix before putting the plant into the Batmix. This is done by filling the pot (eg 10 liters) with Batmix and  rinsing it with 5 to 10 liters of water. After this, the plant can be planted directly. The fertilisers that are absorbed directly will be flushed out with the water. Within the following days, the EC value in Batmix will rise again and gradually the non absorbable fertilisers will be released.
Yes, we advise you to mix Batmix with full ground when your soil outside is very clayey. If your soil is very airy we would recommend you use Bat Guano.
Batmix is fertilised for 6 weeks. At a normal development of your plant, you only have to start adding plant nutrition like Alga Bloom after 6 weeks. See the 100% NATURAL Grow Schedule. If you choose to add extra nutrition (sooner than 6 weeks) we advise you to take a good look at the leaves of your plant. If the lower leaves (old leaves) of your plant change its colour from light green to yellow, you can start adding Alga Bloom.
royalmix
Normally you'll notice the leaves starting to turn yellow after 6 weeks. This is a sign you need to start fertilisation.
Because of its fertilisation through Bat Guano, Batmix gives your plants a strong taste and smell. You should choose Batmix when quality is the most important to you. Royalmix contains a selection of natural solid fertilisers that release the nutrients when the plant needs them. Because of this you can expect a higher development and thus a higher yield. Choose for Royalmix when you want to grow organically and when you want to go for the highest yield with a natural fruity taste. Plagron Allmix has a finer texture than Batmix and Royalmix. Because of this it can better hold more water. This makes Plagron Allmix the right choice if you want to grow organically, in high temperatures, small pots or with high light intensity. Furthermore Plagron Allmix is ideal if you plan to reuse your soil and want to upgrade it with Supermix.
No, combined with our 100% NATURAL Grow Style you don't have to regulate the pH value.
Our Royalmix is maximally fertilised. For young plants that are not yet accustomed to high EC-values, it may be difficult when they are suddenly planted into a maximum fertilised soil. Therefore we recommend to flush the Batmix before putting the plant into the Royalmix. This is done by filling the pot (eg 10 liters) with Royalmix and  rinsing it with 5 to 10 liters of water. After this, the plant can be planted directly. The fertilisers that are absorbed directly will be flushed out with the water. Within the following days, the EC value in Royalmix will rise again and gradually the non absorbable fertilisers will be released.
plagron allmix
Normally you'll notice the leaves starting to turn yellow after 6 weeks. This is a sign you need to start fertilisation.
Because of its fertilisation with Bat Guano, Batmix gives your plants a strong taste and smell. You should choose Batmix when quality is essential to you. Royalmix contains a selection of natural solid fertilisers that release the nutrients when the plant needs them. Because of this you can expect a higher development and thus a higher yield. Choose for Royalmix when you want to grow organically and when you want to go for the highest yield with a natural fruity taste. Plagron Allmix has a finer texture than Batmix and Royalmix. Because of this it has much better water retention. This makes Plagron Allmix the right choice if you want to grow organically, in high temperatures, small pots or with high light intensity. Furthermore Plagron Allmix is ideal if you plan to reuse your soil and want to upgrade it with Supermix.
No, combined with our 100% NATURAL Grow Style you don't have to regulate the pH value.
Plagron Allmix is maximally fertilised. Young plants that are not yet accustomed to high EC-values may struggle when they are suddenly planted into a maximally fertilised soil. Therefore we recommend that you flush the Plagron Allmix before putting the plant into the Plagron Allmix. This is done by filling the pot (eg 10 liters) with Plagron Allmix and  rinsing it with 5 to 10 liters of water. After this, the plant can be planted directly. The directly available nutrients will be flushed out with the water. Within the following days, the EC value in Plagron Allmix will rise again and gradually the non absorbable fertilisers will be released.
promix
You should start adding nutrition from the first day. More information can be found on our Grow Schedule which you can download here.
According to the 100% NATURAL Grow Style you don't have to regulate the pH value when you combine Promix with Alga Grow and Alga Bloom.
Yes, technically this is possible. However, the airiness of Promix will make it difficult for the seeds or cutlings to absorb moisture. Therefore they will not develop as well and less quickly. The fibers in Promix also may hinder the seeds when they are growing out of the soil. Therefore you should rather use our Seeding & Cutting soil.
If you are an experienced 100% NATURAL grower and you want control over the  amount of nutrients, then choose Promix. It will allow you to feed your own plants from day one. Plagron Allmix, Batmix and Royalmix are all soil mixtures that are prefertilised for 6 weeks. They are specifically created to combine with 100% NATURAL products. Choose Plagron Allmix if you grow in high temperatures, with high light intensity or in small pots. Choose Batmix if you want to go for the best quality and Royalmix if you want to go for the highest yields and a natural fruity flavour.
alga grow
No, this is not necessary. You don't have to add growth nutrients on pre-fertilised Plagron soils because it's already in there. Only when you grow with Promix you start with Alga Grow from the first day.
No, combined with our 100% NATURAL Grow Style you don't have to regulate the pH value.
Yes, if you quickly want to fix a nutritional deficiency, you can spray a solution of 2 ml per liter of water on your leaves.
Alga Grow can be stored in a solution for up to 48 hours. After this, Alga Grow may spoil.
Our organic products will remain stable for 6 months after opening the product.
If a slimy sludge comes out of the bottle and / or you notice a smell of ammonia, the product has gone bad and you can't use it anymore.
alga bloom
Yes, this is no problem. However your results may be even better when you stick to our Grow Styles and combine Alga Bloom with our 100% NATURAL products.
No, in combination with one of our organic soil mixtures you don't have to add the pH value.
Yes, if you want to quickly fix a nutritional deficiency, you can spray a solution of 2ml per liter of water on your leaves. You should only do this for the flower or fruit formation.
Alga Bloom can be stored in a solution for up to 48 hours. After this, Alga Bloom may spoil.
Yes, Alga Bloom is a complete fertiliser. Green Sensation is an additive, to improve quality and increase yield.
We would like to advise you to use Sugar Royal only once a week. As you can see in our Grow Schedule, you can add Alga Bloom and Green Sensation every time you water the plant from the fourth (Green Sensation) and fifth (Alga Bloom) week of flowering phase.
Our organic products will remain stable for 6 months after opening the product.
If a slimy sludge comes out of the bottle and / or you notice a smell of ammonia, the product has gone bad and you can't use it anymore.
top grow box 100% NATURAL
One Top Grow Box is suitable for 1m2. This can be, for example, five big plants or thirty smaller plants.
The Top Grow Box 100% NATURAL is intended to grow 1m2 of plants. Here you need at least 100 liters of potting soil, and up to a maximum 300 liters.
Combined with the mineral nutrition of the grow style 100% TERRA you need enzymes. Since the substrates in the 100% NATURAL grow style contain microbiological life that creates enzymes you don't need to add them. That's why there is Pure Zym instead of Vita Race in the Top Grow Box 100% TERRA.
Plagron Allmix, Batmix, Royalmix and Promix are specifically designed to combine with the Top Grow Box 100% NATURAL.
100% TERRA
Yes, you should check the pH value. The 100% TERRA nutrition will already adjust the pH value in your nutrient solution. However, as tap water quality differs everywhere, you should check if the pH value of your nutrient solution is 6.0. If this is not the case, adjust the value using pH Plus and pH Min.
The 100% TERRA mineral nutrition makes it easier to boost plant growth than organic fertilisers.
No, you have to adjust pH. The mineral nutrition in 100% TERRA will only be absorbed properly if the pH value in the nutrient solution is 6.0. If you do not want to adjust the pH-value, choose the 100% NATURAL grow style.
Lightmix and Growmix have been specifically developed to be combined with 100% TERRA grow style nutrition.
100% TERRA nutrition includes an automatic pH buffer adjusted for average tap water. In many cases, the pH value will already be correct after the TERRA nutrition has been added. However, as tap water quality can vary, we advise you to check this before watering your plants.
No, you do not have to leave a mixture of tap water and plant nutrients to stand for 24 hours before watering your plants.
Buying a tensiometer is always a good idea. This meter indicates if your watering strategy is correct - i.e. the soil is not too dry, and not too wet. This soil condition affects the absorption of water (and nutrients) by the roots and therefore influences how well your plants grow and flower.
lightmix
Lightmix is already pre-fertilised for one week. Start giving nutrients after one week.
Yes, Lightmix has been formulated to grow using mineral nutrition. This means that the pH value affects how well the nutrition is absorbed.
Yes. However, the best choice is Promix.
Yes, but it is better not to. The fibres in Lightmix can restrict the growth of the seedlings and the nutrients in Lightmix will delay root growth. The airy structure also means that the contact between the seeds and the moist soil is not as good. This prevents the seeds from absorbing the moisture they need to start germination. Our Seeding & Cutting Soil avoids these problems and boosts the germination rate and speed, resulting in more uniform plants.
Planting 1-2 week old seedlings in Lightmix will cause no problems.
growmix
Yes, you can. Growmix has been specifically developed to be combined with 100% TERRA and 100% NATURAL grow styles. However, Growmix is not 100% organic in it's own right. Our Alga Grow and Alga Bloom products work very well on Growmix. If you use Alga Grow and Alga Bloom on Growmix, you do not have to adjust the pH value. However, if you use 100% TERRA grow style, you should adjust the pH value.
No. Growmix contains nutrition for the first three weeks, so if your plants start flowering within this period you do not need to use Terra Grow.
terra grow
In 90% of the cases, Terra Grow will adjust the pH value itself. However, as tap water quality differs everywhere, you should check if the pH value of your nutrient solution with Terra Grow is 6.0.
Yes. If you want to remedy a nutrient deficiency in the growing phase as quickly as possible, for example because the leaves are yellow, you can spray the leaves with Terra Grow. Use a maximum dose rate of 2 ml/litre.
Terra Grow can be stored for four days after it has been mixed with water. Do monitor the pH value, as this will probably start to slowly increase. Make sure that no organic products have been mixed into the solution, as they can start to spoil after just 48 hours. Also ensure the solution is kept moving (circulation pump) and that the tank is clean before you mix the solution.
Supermix is an organic fertiliser from the UNIVERSAL line. Terra Grow is part of the 100% TERRA grow style and is a mineral nutrition. For optimal results, it is best to combine Supermix with products in the 100% NATURAL grow style. Supermix requires micro-organisms in the soil. These can be found in the potting soils in the 100% NATURAL grow style. Mineral nutrition (such as Terra Grow) is not beneficial for these micro-organisms, so it combines less well with Supermix.
terra bloom
In 90% of the cases, Terra Bloom will adjust the pH value itself. However, as tap water quality varies everywhere, you should check if the pH value of your nutrient solution with Terra Bloom is 6.0.
You can start using Terra Bloom from the first day of the flowering phase, unless the soil still contains nutrients. If you grow using Growmix (which contains fertilisers for three weeks), after one week of growth you will only have to start giving Terra Bloom after the second week of flowering.
Green Sensation increases the EC value by 0.55 uS/cm if you add 1ml /litre. Solve this by adding Green Sensation first, then adding Terra Bloom until you reach the desired EC level.
Terra Bloom can be stored for four days after it has been mixed with water. Do monitor the pH value, as this will probably start to slowly increase. Make sure that no organic products have been mixed into the solution, as they can start to soil after just 48 hours. Also ensure the solution is kept moving (circulation pump) and that the tank is clean before you mix the solution.
top grow box 100% TERRA
One Top Grow Box is suitable for one square metre of plants. This may be five large plants, or 30 smaller plants.
One Top Grow Box 100% TERRA is suitable for one square metre of plants. This requires between 100 litres of potting soil (minimum) and 300 litres (maximum).
Enzymes are required in combination with the mineral nutrition from the 100% TERRA grow style. Enzymes are not required in combination with the 100% NATURAL grow style. This why the Top Grow Box 100% TERRA contains Pure Zym instead of Vita Race. Vita Race can be used in the 100% TERRA grow style.
Lightmix and Growmix have been specifically developed to be combined with the Top Grow Box 100% TERRA.
100% COCO
Yes. If you use 100% COCO grow style you should adjust the pH value to between 5.5 and 6.0 after the products have been mixed.
Drainage is essential for the best results and the fewest problems. If you prefer to grow without drainage, it is better to use potting soil instead of 100% COCO substrates.
Yes and no: The coconut fibre is, of course, organic. However to clean the fibre and to buffer the pH value, the fibres are rinsed with a solution of mineral calcium. This cleaning process, and the use of mineral nutrition during growing, means that the 100% COCO grow style is not organic. It is however environmentally friendly, in the sense that coconut fibres are a waste product which are being recycled usefully.
100% COCO grow style offers a number of advantages: 1. Plagron coco substrates all have a guaranteed maximum EC value of 0.3 uS /cm. This is a guarantee that you are growing using the purest and best rinsed coconut substrate available on the market. Compare that with the products offered by our competitors. 2.100% COCO grow style guarantees no rapid pH fluctuations in the substrate. This is however possible on mineral wool and other hydrological substrates. 3.100% COCO substrates act like a sponge. They have a high water holding capacity, yet remain light and airy. This makes it a lot easier to optimise watering.
No. You do not have to leave a mixture of tap water and plant nutrients to stand for 24 hours before watering your plants.
Buying a tensiometer is always a good idea. This meter indicates if your watering strategy is correct - i.e. the soil is not too dry, and not too wet. This soil condition affects the absorption of water (and nutrients) by the roots and therefore influences how well your plants grow and flower.
It is possible to water plants on 100% COCO substrates from underneath, but this is not ideal. It is important to always include Pure Zym from Plagron in the nutrient water. Pure Zym accelerates the nutrient uptake of the plant and reduces the risk of diseases. Dose Pure Zym at a rate of 1 ml/ 1 litre of water (1:1000). Use this product up to and including the third week of the flowering phase. We advise that you water from above. This corrects any abnormalities in the substrate (EC and pH value) and rinses away any ballast substances present in the substrate. This reduces the risk of problems during growing and increases your yields. The 100% COCO Grow Schedule can be found in 10 languages at the download section of Grow Schedules. This Grow Schedule explains more about how to dose the products and the EC and pH values you should apply.
cocos premium
Depending on your tap water quality, the pH buffer in our Cocos Premium will be used up faster or slower. Cocos Premium can be used for growing for at least six months without any problems.
No. Cocos Premium has already been rinsed and buffered, in accordance with the highest standards. You can start potting your plants immediately.
We advise you add Cocos A&B to the water from day one.
Did you use a lot of fertiliser during your last harvest? Then keep in mind that not all nutrition dosed may have been absorbed by your plants. As a result, the EC or pH value of your soil might be too high for reuse. You can lower the EC value by rinsing Cocos Premium after use. The pH value can be lowered by using PH Min or Lemon Kick.
cocos slab
Depending on your tap water quality, the pH buffer in our Cocos Slab will be used up faster or slower. The Cocos Slab can be used for growing for six months at least without any problems.
No, the Cocos Slab has already been rinsed and buffered in accordance with the highest standards. You can start potting your plants immediately.
Depending on your tap water quality, the pH buffer in our Cocos Slab will be used faster or slower. The Cocos Slab can be used for growing for six months at least without any problems.
We advise you add Cocos A & Cocos B to the water from day one.
After a bad harvest, you should take into account that part of the nutrition dosed has not been absorbed by the plants. This means that the soil cannot be re-used. Perform a pH and EC-analysis first, or have this done by a gardening specialist. It is better not to re-use the Cocos Slab if the EC value is above 1.8, or the pH value is below 5.4 or above 6.5. It is best to change the Cocos Slab in any case after six months.
cocos brix
We advise adding 4,5 litres of water per Cocos Brix. This creates 9 litres of coconut substrate.
The quality is identical. Cocos Premium is shipped from Asia to the Netherlands pressed, and is soaked here.
Depending on your tap water quality, the pH buffer in our Cocos Brix will be used faster or slower. Cocos Brix can be used for growing for six months at least without any problems.
No. The Cocos Brix have already been rinsed and buffered, in accordance with the highest standards. You can start potting your plants immediately.
After a bad harvest, you should take into account that part of the nutrition dosed has not been absorbed by the plants. This means that the soil cannot be re-used. Perform a pH and EC-analysis first, or have this done by a gardening specialist. It is better not to re-use Cocos Brix if the EC value is above 1.8, or the pH value is below 5.4 or above 6.5. It is best to change Cocos Brix in any case after six months.
cocos a & cocos b
Yes. If you use 100% COCO grow style you should adjust the pH value to between 5.5 and 6.0 after the products have been mixed.
100% COCO is a hydrological growing method. With hydrological methods, you give more of all the nutrients than the plants need. What the plants don't use drains away. Cocos A&B contains enough growth nutrients (plenty of nitrogen for example) and enough flower fertiliser (such as plenty of phosphorus and potassium). As the plant only absorbs what it needs, in the growth phase you can also provide flower fertiliser which the plant doesn't actually use.  And vice versa. This is why there is no separate growth and flowering product for hydrological fertilisers.
The nutrient solution can be stored for between four and ten days depending on the hygiene in the growing room and the water tank. Make sure that no organic products have been mixed into the solution, as they can start to spoil after just 48 hours. Preferably monitor the pH value daily, as this will probably start to slowly increase.
Green Sensation increases the EC value by 0.55 uS/cm if you add 1 ml /litre. Solve this by adding Green Sensation first, then adding Cocos A & Cocos B until you reach the desired EC level.
Cocos A contains 0,7% and Cocos B contains 1,9% Mg
Plagron Hydro Cocos 60/40
We advise you to add Cocos A&B to your water from day one.
100% HYDRO
There are various reasons: 1. You as the grower determine the pH value. 2. You as the grower determine the nutritional value. 3. You can compensate for incorrect pH and EC values within an hour by flushing. Then adjust to reach the desired pH and EC values in the substrate. This enables you to respond precisely to the needs of the chosen plant.
In the 100% HYDRO grow style the grower is responsible for determining key factors such as the pH and EC value. It only takes a single mistake to burn the roots and ruin an entire crop! Make sure you have enough experience to measure the pH, calibrate the pH meters and adjust the pH in the nutrition tank. This system also usually uses irrigation systems. This also requires experience, as an incorrectly set timer can allow the plants to dehydrate - or drown them!
With 100% HYDRO grow style, the pH and EC values can change relatively quickly. If you want monitor exactly what is going on in your substrate, you should be able to measure easily. We therefore advise 100% HYDRO growers to buy this type of meter.
Yes, 100% HYDRO grow style can be used on all regular hydrological substrates and aeroponic systems.
No, you do not have to leave a mixture of tap water and plant nutrients to stand for 24 hours before watering your plants.
Yes, 100% HYDRO products from Plagron are extremely suitable for combination with all watering systems.
euro pebbles
Euro Pebbles have already been rinsed. However, dust is formed during transport, so it is best to rinse Euro Pebbles before use. You will also want to give nutrient feed water with the correct EC and pH value before planting.
It is almost impossible to give too much water on Euro Pebbles, as the gaps between the pebbles are very large. Rather, make sure you give enough water! Water at least twice a day, including during the night. Some growers also water continually during the day.
You can use Euro Pebbles for many years. After harvest, soak the Euro Pebbles for 24 hours in a solution with Pure Zym and a pH value of 5.5. Then rinse them thoroughly with a nutrient solution with 1 ml/litre Hydro A & Hydro B and a pH value of 5.5.
Plagron Hydro A & Hydro B can be used on all regular hydrological substrates.
hydro a & hydro b
Yes. The pH value of the nutrient solution must be around 5.5. The chelates in the nutrient solution improve the absorption at deviating pH values. However, as the pH value of your substrate may increasingly deviate from the pH value in the nutrient water you supply, adjusting the pH value of your nutrient solution is still necessary.
Green Sensation increases the EC value by 0.55 uS/cm if you add 1 ml/litre. Solve this by adding Green Sensation first, then adding Hydro A & Hydro B until you reach the desired EC level.
The nutrient solution can be stored for between four and ten days depending on the hygiene in the growing room and the water tank. Make sure that no organic products have been mixed into the solution, as they can start to spoil after 48 hours. Preferably monitor the pH value every day, as this will probably start to slowly increase.
grow schedules
Every grow style requires specific products and dosages. For example if you choose 100% NATURAL you need to follow the instructions in the 100% NATURAL Grow Schedule.
With the Grow Schedule Calculator you can create your own Grow Schedule that fully meets your needs. If you prefer a shorter growth phase than described on your Grow Schedule you sould select your desired growth period and other desires. Once you click 'calculate schedules' your own Grow Schedule will appear.
The development of seed to seedling takes approximately one to two weeks. It is important that the plant is well rooted and has a healthy leaf. From this moment the growth phase begins and you can consult our Plagron Grow Schedules. Download the Grow Schedules here.
sales
Plagron products are sold at grow shops around the world. Want to know where the nearest store is? Use the shop locator on our website or contact us.
Fill out our service desk contact form as comprehensive as possible. One of our Plagron representatives will contact you as soon as possible.
Please use the Shop Locator on our website to find which stores in your area carry Plagron products. You can either type in an adress or click 'use my location'. 
information request
Our cultivation specialists can tell you everything about composition, application and benefits of our products. Please contact our servicedesk and our specialists will contact you as soon as possible.
Our cultivation specialists can tell you everything about composition, application and benefits of our products. Please contact our servicedesk and our specialists will contact you as soon as possible.
Of course! To receive a brochure or other printed materials, please contact us. We will gladly send you this. You can also take a look at our downloads page, here you will find the digital version of our product catalog.
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