You're dealing with a lack of copper when young leaves start to wither and dry out. This happens because copper is not mobile in the plant, meaning young leaves draw copper from older leaves. The leaves curl down and hang limp. They will also get a faint blue glow. Stems, branches and twigs can be less strong and might break easier. A plant with copper deficiency will also grow slower than a healthy one.
How do you recognise a copper deficiency?
- Wilting and desiccation of younger leaves.
- Leaves curl down and get a faint blue glow.
- Stems, branches and twigs are less strong.
- Small leaves with brown spots.
- Tip burns on the leaves.
- Delayed growth.
- Young leaves turn dark green and will twist.
What is the (possible) cause?
- Low copper levels in the soil or substrate.
- The pH value of the soil or substrate is too high.
- Too much iron, aluminium, manganese or calcium in the soil.
- The root of your plant system functions poorly. This can be due to diseases, damage or low temperature.