Closeup of ivy leaf in the wind. Ivy is an evergreen plant, ivy, which can reach up to 30 feet tall even if the surface allows it (trees, house walls). Also, it can spread on earth, if vertical surfaces are not available. The plant runs and climbs through aerial stems, which cling to the substrate. The leaves are slender, with 50-100 mm length and petioles 15 to 20 millimeters. Ivy blooms starting in late summer into autumn. The flowers are greenish-yellow color, rich in nectar, are a rich source of food for bees and other insects, and have small size. Ivy makes and fruit berries of pepper size or larger that are poisonous to humans, but the birds are an important source of food.