Controlling maple petiole borer is difficult and generally unnecessary. Although leaf drop may at times be large enough to cause concern, rarely does more than 25% of the tree’s leaves fall.

Q: My laceleaf Japanese maple leaves have become brown-tipped or gray-spotted, and some leaves have curled up entirely. I know that trees will be shedding leaves soon, but is there anything I ...

Keep your maples healthy & hearty by learning to recognize common maple tree diseases & knowing how to prevent or treat them ...

Q: There are multiple little bumps on most leaves on our 5-year-old maple tree. We’re thinking they’re eggs and we’re wondering how to treat the tree. — Angie K. A: The bumps on the leaves ...

Q. My maple tree has black spots on the leaves that just appeared recently. Should I be concerned about this? What should I do? A. Sometimes wet conditions earlier in the season can cause problems ...

Q: Our dwarf Japanese maple tree has grown beautifully for at least 15 years, but then one day last month, boom, the leaves started looking kind of curled. Now they're all both curled and crunchy ...

BILL HLUBIKMany leaf spots on maple tree leaves are superficial and no fungicides are necessary. Relieve stress on trees with proper watering and mulching. Q. I have a large maple tree in my ...