Horse Chestnut Leaf Miner
Symptoms of Horse Chestnut Leaf Miner:
The Horse Chestnut Leaf Miner make the horse chestnut trees shrivelled browned
The disease affects the tree appearance but not the health of the tree
The larvae of the moth mine within the leaves
About the Horse Chestnut Leaf Miner:
The horse chestnut leaf miner is a combination of an exotic pest and a killer disease. This could threaten to wipe out the UK’s conkers and horse chestnut trees within 15 years. The moth first came to the UK in 2002. They affect Britain’s population of horse chestnut trees along with the bleeding canker disease. The trees now barely last 5 years. The moth’s larvae effectively eat the trees’ leaves from the inside out by mining them. This destroys the leaf tissues, causing them to turn pale or brown. This has an impact on the trees’ ability to photosynthesise and their overall health. It also has an impact on the size of the conkers that are grown on the trees, which are smaller than usual.