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Introduced, warm-season, perennial, prostrate to erect, woody herb or shrub to 1 m tall. Stems are reddish, hairless, with weak opposite longitudinal ridges; they arise from rhizomes or woody crowns. Leaves are opposite, sessile, hairless,

Photo: Macleay Grass Man (CC BY 2.0), via Wikimedia Commons

Common St. Johnswort

Hypericum perforatum

Common St. Johnswort (Hypericum perforatum) is a landscape plant valued for its form and structure as much as its bloom. Common St. Johnswort is sized and grown for a real yard, not a show bench. Match it to full sun to part shade and water it in for the first season while roots establish. One caveat: like any plant, its published range is a guideline, not a guarantee, for the specific microclimate of your yard. Given a spot that matches its light and water needs, it is a dependable, low-drama addition to the yard.

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Where to buy Common St. Johnswort

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Hardiness range

A hardiness zone is not on file for this plant yet, and a ZIP-level fit check is not available for it.

How it does in your yard

HabitNot recorded
Hardiness zoneNot recorded
Native to the USNot recorded
ToxicityNot recorded

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Questions

Is Common St. Johnswort native to the United States?

USDA PLANTS data does not record Common St. Johnswort as native to the United States.

What USDA hardiness zone does Common St. Johnswort need?

A minimum hardiness zone is not on file for Common St. Johnswort yet.