When we built our home, we had 38 Autumn Blaze Maples planted among endless amounts of others.
Issue #1: Last summer, after 2 years, I noticed die off on a half dozen trees only to find a serious problem with scale. I treated ALL of the trees with CoreTech tree and shrub tablets. Then I sprayed the trees down with an insecticide to fight the scale. I had to dramatically cut a couple of the trees because the amount of dead in them was overwhelming.
The scale is back this year, even though the tablets were supposed to work for 2-3 years. I'm worried about the lack of growth. What else can I do to rid the trees of scale? I planned on using a Bayer systemic, but wanted some valid advise.
Issue #2: Of less importance, though it may indicate another dying tree, I have one with the bark separated at the base. There is a black powdery looking residue coming out of the cracks in the bark. I can't find any information on this type of bark disease. Any ideas?
Thanks so much for your help!
Issue #1: Last summer, after 2 years, I noticed die off on a half dozen trees only to find a serious problem with scale. I treated ALL of the trees with CoreTech tree and shrub tablets. Then I sprayed the trees down with an insecticide to fight the scale. I had to dramatically cut a couple of the trees because the amount of dead in them was overwhelming.
The scale is back this year, even though the tablets were supposed to work for 2-3 years. I'm worried about the lack of growth. What else can I do to rid the trees of scale? I planned on using a Bayer systemic, but wanted some valid advise.
Issue #2: Of less importance, though it may indicate another dying tree, I have one with the bark separated at the base. There is a black powdery looking residue coming out of the cracks in the bark. I can't find any information on this type of bark disease. Any ideas?
Thanks so much for your help!