About.com: Trumpeting Trumpet Vines on the Landscape: Information about trumpet vines and how to attract hummingbirds with flowing vines.
Copihue or Chilean Bellflower, Lapageria rosea, The: Describes history, cultivation, and cultivars, also provides photographs.
Eastcheam Ivy: Contains information about different species of the plant along with photographs and resources.
Hoya: Tips on culture, germination and care. Information on the species history, native habitat and systematics. Contains a larger photo gallery with photos of flowers, whole plant and leaves.
Ivyfile: Ivy encyclopedia with cultivars, illustrations, and nursery sources.
Luffa.info: Information and photopgaphs about luffa sponge gourds.
Passion Flowers: Information about Passiflora collection with tips on growth and care in the UK climate.
Poison Ivy, Oak & Sumac Information Center: Pictures of various poisonous plants with pictures. Includes facts, remedies, treatment, question and answers, and FAQs.