By Andi Anderson
Anthracnose is a common fungal disease that affects many shade trees, especially during cool and wet spring seasons. This disease spreads easily when temperatures remain mild and frequent rain helps fungal spores move from one place to another. Trees such as sycamore are highly affected, often showing the most visible damage.
The disease mainly attacks new leaves, shoots, and buds. Infected leaves develop brown or black spots, especially along the veins. In severe cases, young leaves fall off early, leaving trees looking bare. Twigs and buds may also get infected, stopping leaf growth completely. This makes the tree look unhealthy and weak during the early growing season.
Some trees, like sycamore, may also develop stem cankers. These are damaged areas on branches that can kill small twigs and give a broom-like appearance to the tree. These cankers can also carry the fungus into the next growing season, causing repeated infections.
Despite its harmful appearance, anthracnose rarely kills trees. Most trees can recover by producing a second set of leaves later in the summer. However, repeated infections over several years can reduce tree strength and energy, making them more vulnerable to other problems.
There is no direct treatment for anthracnose, but good care practices can help reduce its effects. Providing enough water during dry periods is very important, especially after a wet spring. Adding mulch around the base of the tree helps retain soil moisture. Avoid damaging roots by limiting heavy activity around the tree base.
Pruning infected twigs and cleaning fallen leaves can reduce the chances of infection next year. These simple steps support tree health and recovery. With proper care, most trees can regain their strength and grow healthy again after facing anthracnose stress.
Photo Credit: istock-georgeclerk
Categories: Indiana, General