The purple berry-like growths that appear in oak trees aren't berries at all. They're oak galls, which the tree develops in response to being infested by certain kinds of small wasps. More »

Some types of berry trees include chokeberry, mulberry, western soapberry and hackberry. The fruit of tree berries can tolerate cold temperatures better than most berries, which grow on shrubs. Some berries that grow on ... More » Home & Garden Gardening & Landscapes Trees & Bushes

One kind of plant that has purple berries is the pokeweed. This weed can be found growing along roadsides, in clearings and in open woods from Canada down to New England, south to Florida and west to Texas and Mexico. More »

To identify oak trees using leaves, examine the leaf branching on the corresponding tree, determine if the leaf is simple or compound, and look for lobes on the leaf's edge. Also, check to see whether the lobes are point... More »

The growth rate of oak trees varies depending on the species. Oak trees may be classified as deciduous or evergreen trees and grow at very slow or quite rapid paces. Some oak trees take nearly a century to reach their fu... More »

Acorns, the seeds of oak trees, fall off their parent trees when they mature, which typically occurs between September and early November in the United States. The exact time of maturation varies slightly with different ... More »

Oak wilt, canker diseases, shoestring root rot, fungal infections and mildew diseases are some of the common diseases that affect southern live oak trees. Some of the diseases are fatal to the trees and can't be treated,... More » Home & Garden Gardening & Landscapes Trees & Bushes