My husband and I just planted 3 Autumn Blaze maples about 3 weeks ago. One is doing really well with large, lush green leaves, but the other two have leaves that are turning brown. The one that is doing good has a bit more shade than the other two, but is planted in the same location. We have been watering them twice a day for a few hours with a slow trickle hose because we are not getting much rain right now. Does the brown leaves indicate that they are not getting enough water? Should we treat the trees with something?
Any insight would be deeply appreciated!