Low level of potassium in leaves: Symptoms are shown during flowering.

Low level of potassium in leaves: Symptoms are shown during flowering.

Plants suffering from a lack of potassium are smaller and have a short, limp stem. In addition, you can recognise the deficiency by smaller flower tops and pale fruits. Leaves can turn yellow or die off. This starts at the edges. There may also be brown or burned spots visible. A potassium deficiency is initially visible at the older, lower leaves. This is because potassium is mobile. This means the young leaves draw the potassium from the older leaves. Potassium deficiency results in a low yield that is also of a poor quality.

How do you recognise a potassium deficiency?

What is the (possible) cause?

How can you prevent it?

To prevent a potassium deficiency, you can use our Bat Guano. This bat manure is very rich in potassium. Use one of our basic nutrients (like Cocos A&B) to reduce the likelihood of a deficiency. Also keep abiotic factors in mind. These include temperature, light intensity, acidity, amount of moisture and wind strength.

How can you cure it?

To stop a potassium deficiency, you can use a liquid fertiliser with a high potassium content. Examples include Green Sensation and PK 13-14.

What does potassium do for the plant?

Potassium improves the resistance of the plant and helps strengthen the cell wall. It regulates the opening and closing of stomata. These are used to regulate the absorption of carbon dioxide, water vapor and oxygen. Proper functioning of the stomata is essential to the plant. It uses them for photosynthesis, transporting nutrients and remaining cool.

Not sure if you have a potassium deficiency?

Contact our grow expert via Servicedesk and ask for advise.

Grow topics

Grow knowledge: we've got plenty of it. We think these Grow topics may be of interest to you.

Phosphorus deficiency

Magnesium deficiency

Boron deficiency

Manganese deficiency

Tools

Want to know where to buy this product? Or perhaps you’re looking for a custom schedule or just a helping hand? Our Tools have got you covered.

Grow Schedule Calculator

Shoplocator

Product Selector