 It contains more than 8,000 trees and woody shrubs, representing over 1,000 species and cultivated varieties of plants in 50 plant families.Of particular interest are its collection of boxwood cultivars (said to be the largest in North America) and its pine collection, representing over half of the world's species.Other arboretum features include a "Ginkgo biloba" grove (more than 300 trees), the Virginia Native Plant Trail (established 1997), extensive meadows, and plantings of azalea, beech, buckeye, catalpa, Cedar of Lebanon, crabapple, holly, lilac, linden, magnolia, maple, stuartia, and viburnum.