description Forsythia viridissima Overview
Forsythia viridissima, commonly called greenstem forsythia, is a deciduous shrub native to China that was introduced to Western horticulture in the mid-19th century by plant collector Robert Fortune. The plant is distinguished by its notably square, bright green stems, which provide winter interest after the foliage drops. It is among the earliest shrubs to bloom in spring, producing an abundance of bright yellow, four-petaled flowers before the leaves emerge. It is widely planted in temperate climates as a border plant or hedge.
help Forsythia viridissima FAQ
Why is Forsythia viridissima called greenstem forsythia?
Forsythia viridissima has upright branches that remain noticeably green, sometimes for several years. It is a deciduous shrub that produces yellow, four-petaled flowers before or as the leaves emerge in spring. [Oregon State University](https://landscapeplants.oregonstate.edu/plants/forsythia-viridissima)
Where did Forsythia viridissima come from, and who introduced it to Western horticulture?
Greenstem forsythia is native to China and nearby East Asia. Plant records credit the collector Robert Fortune with introducing it to Western horticulture in 1844. [Boone County Arboretum](https://bcarboretum.org/plants/genus/Forsythia/species/viridissima)
When should I prune Forsythia viridissima?
Prune it immediately after flowering, because late-season pruning can remove the next spring's flower buds. Forsythia flowers on older wood, so cutting it before bloom can reduce the yellow display. [Iowa State University Extension](https://yardandgarden.extension.iastate.edu/faq/when-best-time-prune-forsythias)
Is Forsythia viridissima evergreen or deciduous?
It is a broadleaf deciduous shrub, so it loses its leaves seasonally. Oregon State lists greenstem forsythia as capable of reaching about 10 feet, or 3 meters, with green branches that persist beyond one season. [Oregon State University](https://landscapeplants.oregonstate.edu/plants/forsythia-viridissima)
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