United Kingdom 
I have a mold growing on the bark of my cherry trees, apple trees and willows, and curly leaves could you tell me what it is and how to treat it.
24 Jun, 2012
Answers
In fact, the growth of lichen like this is a sign of good air quality and a lack of pollution. I would guess you live in a rural area or one with clean air.
24 Jun, 2012
If the leaves are curled around a whitish, fuzzy deposit, and the "mold" is also whitish and fuzzy, it might be wooly aphid, a potentially serious pest.
27 Jun, 2012
Are you sure its mould and not lichen which is perfectly natural on trees?
24 Jun, 2012