Grass around Japanese maples?
Do Japanese maples, maybe primarily Acer palmatum, do better if the grass is kept away from them? If so, how wide an area should be kept grass-free and mulched? Grass should be kept away from Ilex opaca, American holly, for the best performance--it can make a substantial difference. But for a lot of other trees and shrubs it doesn't seem to make very much difference, or it makes no difference.