There are about 68 species of shrubs native to the Pinelands.
Any multi-stemmed perennial woody plants of low stature are generally considered shrubs. Some species however, such as Blackjack Oak, can take on a tree or a shrub form depending on environmental conditions or genetics. Diminutive and particularly low-lying species are often regarded as sub-shrubs. Shrubs (especially ericaceous shrubs) are certainly one of the most abundant kinds of plant growth in the Pinelands, and the shrubby understory is a defining characteristic of some of the vegetation communities.