Pin Oak - brown leaves

Asked June 25, 2019, 9:34 PM EDT

My pin oak is already shedding its leaves especially at the bottom and middle, but not as much on the top. I’m trying to determine if it’s wilt anthracnose based on the very wet spring in Cuyahoga county.

Cuyahoga County Ohio

2 Responses

You are right that the conditions this year have anthracnose showing up on trees that we typically don't think of for anthracnose. These images do have some characteristics of anthracnose and here is a good description of symptoms for you to check against what you are seeing on the tree

However, oak wilt has been diagnosed in a lot of counties in Ohio. I would suggest you send some samples in to the lab to get a confirmed diagnosis on whether you are seeing anthracnose or oak wilt. Here is the link to the clinic and they describe how to submit samples.

It is better to have the clinic positively ID what is happening as the recommended response from your end on dealing with these issues varies greatly between the two options.

Thank you for your prompt reply. I wanted to update you and let you know that my pin oak is once again blooming new leaves and appears to be on the road to recovery after a bout with anthracnose. Thanks for this amazing service!