School of Natural Resources
Department of Horticulture and Crop Sciences
Ohio State University Extension
The Ohio State University
This document was created in 1988 and reviewed and updated in 1999.
All educational programs conducted by Ohio State University Extension are available to clientele on a nondiscriminatory basis without regard to race, color, creed, religion, sexual orientation, national origin, gender, age, disability or Vietnam-era veteran status.
Keith L. Smith, Associate Vice President for Ag. Adm. and Director, OSU Extension.
TDD No. 800-589-8292 (Ohio only) or 614-292-1868