Knowledgebase

Oak tree looks distressed #651790

Asked June 16, 2020, 2:47 PM EDT

Can you tell me what is wrong with my oak tree? Please see pictures of the leaf damage. There are other trees in the neighborhood that have the same issue.

Cecil County Maryland

Expert Response

The foliage looks like it is exhibiting symptoms of Taphrina caerulescens, oak leaf blister, a fungal disease on the foliage. Fungal infections occur in the early spring on newly expanding leaves and is favored by cool, wet environmental conditions. Infections have been recorded on over 50 different species of oak belonging to both the white oak and red oak groups.  Heavy infections mar their appearance but do not endanger the tree health.  https://bygl.osu.edu/index.php/node/1613

Marian
Answered by the Home & Garden Information Center's Maryland Certified Professional Horticulturists Replied June 17, 2020, 11:28 AM EDT

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