Hedera helix - Photos of flowers and fruit. English Ivy (Hedera helix) - Description, images, invasiveness in the USA, and control. Hedera helix - Information and photographs of the leaves and flowers of Ivy. Ivy: Its Benefits, Disadvantages and How to Kill it. - Information on this plant, its effects on trees and brickwork, how to remove it and the difficulties of killing it completely. English Ivy - Research project on Hedera helix by Abby Hitchins at the University of Wisconsin-LaCrosse. Hedera helix: English Ivy - Identification fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Poisonous Plants: Hedera helix - Description and images from Poisonous Plants of North Carolina.