Acer griseum · Tree
Verticillium wilt: Remove and burn infected wood; avoid replanting maples in the same soil.
Honey fungus: Improve drainage and air circulation; remove infected roots if possible.
Acer leaf scorch: Water deeply during droughts and mulch to retain soil moisture.
Aphids: Wash off with a strong jet of water or use insecticidal soap if severe.
Acer gall mite: Rake up and dispose of fallen leaves to reduce overwintering populations.