Maple Trees

Sooty Mold

Anonymous added on October 11, 2012 | Answered

I finally discovered what the heavy black stuff on my deck and concrete drive is. It's sooty mold. All I have around is 100 year old, maple, oak and pine trees. How do I get rid of the aphids (if that's the problem) from such large plants? It took me 5 hours of constant high pressure cleaning to get most of the black off my 8 X 20' deck. A large driveway is still covered and there is a lot of sticky stuff on my car and husband's. Smaller plants such as hostas have quite a bit also. Who do I call to clean the trees off?

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Certified GKH Gardening Expert
Answered on October 12, 2012

Neem oil can be used to get rid of the pests as well as the fungus This article will help:

An arborist can help, especially if pruning becomes necessary, but you should be able to mix the neem oil in a sprayer to treat the trees.

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