Developed in partnership with the USDA Forest Service, the proceedings of the International Workshop in Tree Root Development in Urban Soils presented by The Morton Arboretum in Lisle, Illinois share valuable research findings. (©1994, 222 pp., softcover. Developed in partnership with the USDA Forest Service.)
Earn four CEUs* by completing the Landscape Below Ground Quiz which can be purchased separately.
4 CEUs* (A, U, T, M, L, Bp)*These CEUs may be earned only once during the life of your certification.