Anthracnose

Leaf Diseases of Hardwoods

Anthracnose

 

Anthracnose on maple after infection when leaves were just starting to form.

Anthracnose on maple after infection when leaves were just starting to form.

Symptoms of maple anthracnose after infection when leaves had fully formed. Early stage of infection.

Symptoms of maple anthracnose after infection when leaves had fully formed. Early stage of infection.

Anthracnose on maple after a late spring infection when leaves had already been developed. Later stage of infection showing advanced symptoms after the fungus has grown within the leaves.

Anthracnose on maple after a late spring infection when leaves had already been developed. Later stage of infection showing advanced symptoms after the fungus has grown within the leaves.

 

Ash anthracnose after early spring infection.

Ash anthracnose after early spring infection.

 

Anthracnose on ash leaflets that had fallen off the tree. Defoliation occurs rapidly when leaves are infected in early spring.

Anthracnose on ash leaflets that had fallen off the tree. Defoliation occurs rapidly when leaves are infected in early spring.

Ash anthracnose symptoms when infection occurs after leaves are fully formed.

Ash anthracnose symptoms when infection occurs after leaves are fully formed.

Higher magnification of the anthracnose symptoms on ash.

Higher magnification of the anthracnose symptoms on ash.

Anthracnose on oak after early spring infection. Symptoms can look like a wilt disease.

Anthracnose on oak after early spring infection. Symptoms can look like a wilt disease.

Anthracnose on oak with infection occurring after the leaves had fully formed.

Anthracnose on oak with infection occurring after the leaves had fully formed.

Pressed oak leaves showing anthracnose symptoms on the leaves. Infection of these leaves took place after the leaves were almost fully formed.

Pressed oak leaves showing anthracnose symptoms on the leaves. Infection of these leaves took place after the leaves were almost fully formed.

Anthracnose on Aesculus sp.

Anthracnose on Aesculus sp.

Close up of another horse chestnut leaf with anthracnose

Close up of another horse chestnut leaf with anthracnose