Weird stuff growing on azalea leaves

Asked May 28, 2016, 2:44 PM EDT

Wondering what this weird stuff is growing on our azaleas

Oklahoma County Oklahoma plant disease horticulture

2 Responses

hard to tell from photos- best guess is powdery mildew.

here is best publication I know of

http://cru.cahe.wsu.edu/CEPublications/eb1229/eb1229.pdf

The photo was sent to Oklahoma State pathology department who had to send it to some other experts in the field. No one is sure, but consensus of opinions is that this is some form of slime mold, perhaps Arcyria cinerea, WAshing it off is all that was recommended.