Pest Alert – Spot Anthracnose Leaf Disease on Native Flowering Dogwoods

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Pest Alert

We are seeing:

(Cornus florida). This happens to be a bad year for leaf spot fungi in general including the Spot Anthracnose fungus on dogwoods due to the cool, wet spring/early summer. Spraying is not necessary unless leaf or flower diseases were a problem in previous years due to consecutive wet, cool springs. Usually the weather is not favorable for the disease year after year. If you find your trees infected, do not be concerned about it at this time. Monitor your trees next spring and if you see that we are going to have another wet cool spring/early summer, you may consider a fungicide treatment. Clean up the fallen leaves this winter to remove them as a source of disease next spring. However, newly planted trees should be protected by fungicides until they are well established in the landscape as they can be severely damaged.

Leaf spot Anthracnose

Leaf spot Anthracnose on Dogwood

symptoms on underside of leaves