Larch canker

Larch canker is a fungal disease that affects larch trees, causing cankers—dead, sunken areas—on the trunk and branches. These cankers disrupt the flow of nutrients and water, leading to branch dieback, needle browning, and sometimes tree death. The disease often results from wounds or injuries to the tree, which allow the fungus to enter. It tends to spread slowly but can be serious in weakened or injured trees. Managing larch canker involves removing affected tissue, avoiding injuries, and maintaining tree health to reduce susceptibility.