The arborvitae (Thuja sp.) collection consists of 1 species and 51 cultivars with a total of 64 specimens. The collection is located across the pond from the iris collection just southwest of Green Heron Pond on 3-Mile Drive. When viewing the collection please note that the unusual pruning (all branches removed to the height of a deer's reach) is due to our resident deer population. They do best in sun and partial shade but will take full shade as well. They prune easily and can be kept at most any height and shape.