October 19, 2011
Black or brown tips usually indicate a watering issue. This means that either the plant is not getting the water it needs from its environment or something is restricting the water it can take up through its roots. Try increasing watering in the spring (as the tree will be going dormant now and will not need or want extra water). Also, check the roots to make sure that there is no disease or pests attacking them. A treatment with phosphorous (bone meal) may also help the tree develop its roots better and improve how much water it can take up.
Was this answer useful?