I have a white growth on just a few apple leaves on my 1 year old
espaliered apple tree in USDA zone 10B (Ventura CA)
My guess is powdery mildew, but I just dont know, It is only in 2
places. I guess I should cut off and spray the baking soda oil spray
on the leaves. What suggestions does anyone have.
powdery mildew dosent typically show up as a series of specks like
that, and is usually much more opaque. Rub the white spots and see
what happens. If it rubs off, you have powdery mildew. If it dosent,
check the bottom of the leaves for insects. It looks to me like you
have leafhopper damage, though the picture isnt very close up.
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