* What they are: Swamp white oak is a long-lived Pennsylvania-native shade tree that’s a good food source for a variety of moth and butterfly caterpillars as well as a good supplier of acorns for ...

During the period between April 15 and July 15, beetles actively carry spores of fungus from tree to tree, meaning oak trees are at high risk for infection with oak wilt. Oak trees with wounds in ...

Trees are nearly always selected for their flowers, foliage, or form. Yet, at this time of year, there is an often overlooked arboreal feature that may achieve sudden prominence in the garden. In ...