Ilex is a large genus of more than 400 species of evergreen and deciduous trees, shrubs, and climbers from woodland regions the world over. Hollies are grown for their leaves, which are often spiny and glossy, and their colorful berries, which often attract birds. Flowers are small, cup-shaped, and rather inconspicuous and are borne from spring to early summer. Male and female plants are usually needed for fruiting. Grow hollies in a woodland garden, as specimens, as hedges, or in rock gardens, depending on the species.