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