Mistletoe Description Mistletoe is a parasitic evergreen plant that lives on trees such as oaks, elms, firs, pines, apples, and elms. The parasitic plant has yellowish flowers; small, yellowish green leaves; and waxy, white berries. Learn the meaning of mistletoe , an evergreen plant that grows on trees and is used as a Christmas decoration. Find out how to pronounce it, see examples of its use and find translations in different languages. Sign in to create & share playlists, get personalized recommendations, and more. Mistletoe , any of several species of semiparasitic plants often associated with Christmas. Mistletoes are pests of many ornamental, timber, and crop trees, and can parasitize a variety of hosts. They are found in the families Loranthaceae, Misodendraceae, and Santalaceae.
