Acer freemanii ยท Tree
Acer gall mite: Prune out affected branches in winter; severe infestations may require horticultural oil.
Verticillium wilt: Remove and burn infected wood; avoid replanting maples in the same soil for several years.
Aphids: Encourage natural predators like ladybirds or use a strong jet of water to dislodge them.
Horse chestnut scale: Apply horticultural oil in winter or summer depending on the life stage; prune heavily infested areas.
Honey fungus: Improve drainage and avoid deep planting; remove infected roots and treat with registered fungicides.