Maple leaf tar fungi in May

Asked May 29, 2018, 11:37 AM EDT

Is there anything we can do about our maple tree with the tar fungi? It has just shed mist of its helicopter seeds. The articles I have read said the fungi developes in the fall. The tree was fine last fall.

Macomb County Michigan

1 Response

Tar spot may start in early summer or spring but is not usually noticed until the spots appear black in the fall. Maple leaf blister (Taphrina sp.) is noticeable in the spring or early summer. The wet weather this spring provided the correct environment for maple leaf blister to develop. Unless you have a sever leaf drop not treatment is usually suggested. Take a look at the following links for additional information:

http://msue.anr.msu.edu/news/maple_leaf_blister_and_anthracnose_two_foliar_diseases_that_can_appear_...

https://ag.purdue.edu/btny/ppdl/Pages/WH_old/hot13/5-21.html

I hope this is helpful,