Content
- Diseases and pests at Leyland cypresses
- Which pests occur on Leyland cypresses?
- What do brown spots indicate?
- Fungal diseases in case of dryness or too much wetness
- Tips
Voices location and care, the Leyland cypress seldom becomes ill
Diseases and pests at Leyland cypresses
Leyland cypresses are robust in a convenient location and with good care and have little trouble handling pests and diseases. Diseases almost only occur when the Leyland cypress gets too little water or is in waterlogging.
Previous article Cutting a Leyland CypressWhich pests occur on Leyland cypresses?
A pest infestation can always occur once. Once you find that the Leyland cypress has been attacked by lice, beetles or moths, you should take action immediately.
Cut off severely affected shoots. For small trees, it is worth trying to remove lice and moths by washing them up.
Discover bark beetles on the Leyland cypress, there is only one solution, namely the removal of the whole tree. The beetles can not be fought and spread to nearby trees.
What do brown spots indicate?
When the shoots of the Leyland cypress turn brown, it is almost always due to the tree being too dry or too humid. Particularly damaging is waterlogging, which does not tolerate the Leyland cypress. If the soil is heavy, you should always drain before planting.
If there are brown spots after winter, it is not frost damage, as often suspected, but dried branches.
Cut off the affected shoots and ensure that the cypress is sufficiently watered.
Fungal diseases in case of dryness or too much wetness
If the Leyland cypress suffers from a lack of water, it becomes susceptible to fungal diseases such as:
While Seiridium Canker and Nadelbrand are mainly favored by excessive drought, root rot occurs due to waterlogging. Cancers are manifested by the discoloration of the leaves and the formation of cancerous lesions on the cortex.
In case of heavy infestation, there is often nothing left but to remove the trees completely. If the diseases are not yet so pronounced, the use of a fungicide can help.
Tips
The many filigree leaves of the Leyland cypress evaporate a lot of water - even in winter. On frost-free days you should therefore water all cypresses during the winter season. The root bales should never completely dry out.