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Easily grown in average, medium moisture soil in full sun to part shade. Adaptable to both light and heavy soils, but prefers moist, acidic, organic soils. Some tolerance for wet conditions. Plants of this species are mostly dioecious (separate male and female plants), but some plants have perfect flowers (complete flowers with functioning stamens and pistils). For best show of berries, plant female plants, with at least one male plant to insure that pollination will take place. Prune to shape in early spring just before new growth begins.
Ilex decidua is a Missouri native, deciduous holly that is commonly called possum haw. It occurs on limestone glades and bluffs, along streams in wet woods, and in lowland valleys, sloughs and swamps. An upright shrub with a spreading, rounded crown which typically grows 7-15′ tall in cultivation (to 30′ in the wild). Obovate, narrow, glossy, dark green leaves (2-3″ long) turn a dull purplish green to yellow in autumn. The whitish flowers of both male and female plants are relatively inconspicuous. Pollinated female flowers give way to orange-red berries which ripen in September and persist throughout the winter until mid-March when new growth begins. Birds, deer and a variety of small mammals (including opossums as the common name suggests) are attracted to the fruit.
Genus name comes from the Latin name Quercus ilex for holm oak in reference to the foliage similarities (holm oak and many of the shrubs in the genus Ilex have evergreen leaves).
Specific epithet refers to the species being deciduous not evergreen like most hollies.