Hey everyone, So, my granny smith apple treeling has had sad leaves recently, and I'm wondering if this is just due to it wanting to naturally drop its leaves seasonally, or if it is actually some type of mildew or something? This isn't exactly a pest problem, but a general pathology problem and I don't think there seems to be a more appropriate section for this thread. If this isn't a natural thing that my tree is going through, is there anything I can do to help it? Any advice would be greatly appreciated! Happy growing, Joey p.s. These pics were taken a little over two weeks apart, on Feb 2nd for the first two and Feb 18th for the later two.
Mildew. Looks like a crapapple. Did you take seeds out of an apple from 'Granny Smith' and use those to get this specimen, or did it pop up on its own?
Search "plants mildew control" or other likely phrases. Orchard management discussions are likely to talk about spraying much larger, more developed trees situated out in the open, so searching control of mildew on plants generally might actually be better in this instance.
Fungicide from your local nursery and their further advice on this dilemma, would assist you too. (It looks portable enough to show your nursery horticulturist....)
Does anyone have any experience with baking soda & water sprayed or rubbed on the leaves? A friend reccommended this to me a while ago for another plant and I saw this again in my search results. It was specifically talking about powdery mildew, but might the method work for both?
Since this is mildew washing the plants fairly forcefully, then having them dry comparatively quickly afterward might instead have an inhibiting effect on it. Long periods of dampness, such as during summer fogs or when watering at night are expected to assist development of some mildews. Washing the leaves, on the other hand can foliage mildews a bad time. There is sometimes also a connection between the development of mildew on susceptible kinds of plants and drought stress.
