DeadwoodOriginal
Seedling
I've been working with an Amur Maple for the pat two seasons, and towards the end of last summer i started getting black spots on my leaves. This year, they have shown up pretty early. I did a defoliation last year, and just recently did a partial outer canopy defoliation. I live in a river town with a creek in the back yard, the fog rolls into the back yard almost nightly, so its a higher than normal humidity than my surrounding areas. Anyone aware of a treatment so i dont have to defole completely, and then perhaps a suggestion as to taking steps to keep the tree safe. Im not even sure it has anything to do with the humidity. My other trees are mostly conifers, and have had no issues with any sort of powdery mildew or other sorts of fungus that ive noticed. Last year was in almost full sun, this year it is more shaded throughout half the day. Any help or suggestions would be appreciated.