Bedding Plant Production, Use and Identification
American Dahlia society
http://www.dahlia.org
W. Atlee Burpee
http://www.burpee.com
Proven Winners
http://www.provenwinners.com
All-America Selections
http://www.all-americaselections.org
Thompson & Morgan
http://www.thompson-morgan.com
Park Seed Co.
http://www.parkseed.com
National Garden Bureau
http://www.ngb.org
A course in the Department of Crop Sciences