Elaeagnus umbellata, commonly known as the autumn olive or Japanese silverberry, is a deciduous shrub in the Elaeagnaceae family. The genus name Elaeagnus derives from Greek elaia (“olive”) and agnos (“chaste tree”), referring to the olive-like appearance of its fruits. The species epithet umbellata means “umbellate” or “with umbel-like clusters,” describing the arrangement of its flowers. Native to eastern Asia, including China, Korea, and Japan, it was introduced to North America in the 19th and 20th centuries for erosion control, wildlife habitat, and ornamental planting, and has since become highly invasive across much of the United States. The plant grows rapidly in poor soils due to its ability to fix nitrogen in root nodules through symbiosis with actinobacteria (Frankia spp.).

The shrub produces small, silvery-green leaves and fragrant yellow flowers, followed by juicy red berries speckled with silver. These autumn-ripened fruits are tart-sweet and edible, historically consumed in Asia fresh or processed into jams, sauces, and fruit leathers. In North America, despite the plant’s invasiveness, foragers and homesteaders use the berries for syrups, preserves, and wines. The berries are notable for their exceptionally high levels of lycopene, an antioxidant carotenoid usually associated with tomatoes.

In traditional Asian medicine, the plant has been used as a tonic, astringent, and anti-inflammatory remedy. Modern interest in its berries focuses on their nutritional and nutraceutical potential, though ecological concerns over its invasiveness often overshadow its food value.