- Daphne - Brief growing tips and descriptions of both tall and dwarf Daphnes, from BBC Gardening.
- Diascia, Twinspur - Descriptions of recommended varieties, with instructions for their cultivation and propagation, from BBC Gardening.
- Diascias Etc. - Christine Boulby is a co-holder of the British National Collection of Diascias. Listing with photos of the diascia holdings, as well as information on hardiness, pests and diseases, and propagation.
- Dimorphotheca pluvialis - Features photographs and a description of this South African daisy.
- Dahlia (20)
- Delphinium (5)
- Dianthus (5)
- Dicentra (3)
- Digitalis (3)
