- American Floral Endowment (2)
- GrowerTalks
 - Serves the commercial greenhouse grower with horticulture and floriculture production information. Includes growing tips for crops such as poinsettias, bedding plants and perennials. - Näu Wale Nü
- Orchid and anthurium pictures, FAQs, culture information.
- NotSoGreenThumb
- Photos of orchids and flowers. Includes an Orchids of the Month gallery.
- Osteospermums
- Daisy plant from South Africa. Contains information and photographs.
- Secret Garden, The
- Revealing the startling inner beauty of familiar flowers through x-rays.
- WiseAcre Gardens
- Guide and photos of winter hardy garden and wildflowers.
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