|Can you tell me where to find most comprehensive horticultural databases on the web for details about individual species and varieties?|
|You can try the following sites. I've had trouble getting into a few of them, and others seem to be works in progress:
USDA Plants Project: http://plants/usda.gov
The Virtual Garden: http://pathfinder.com/vg
Univ of Illinois: www.aces.uiuc.edu/~vo-ag/aglinks/hort.htm
The Garden Gate at: firstname.lastname@example.org Ohio State: http://www.hcs.ohio-state.edu/......
There is also garden planning software, such as Burpee's 3-D Garden Designer (on CD) with an encyclopedia of plants.
Sometimes, the best information can be gleaned from mail-order companies' catalogs.