St. John's wort (Hypericum)
Family: Hypericaceae
Hypericum is a widespread genus, with about 400 species scattered across the world's temperate regions. The Eurasian and north African species Hypericum perforatum has been used as a medicinal herb since ancient times. It is the species most widely cultivated under the name St. John's wort. Now naturalized worldwide, Hypericum perforatum is a noxious weed in many regions. Other species and cultivars are grown as ornamentals. The flowers vary from light yellow to a deep golden color, and also vary in size and shape.
Flower colors:
Tags:
annual, flower, herbal medicine, invasive, ornamental, perennial, shrub, sun
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Cultivation: Small to medium-sized annual or perennial herb or shrub for USDA hardiness zones 4 to 8. Grows best in partial to full sun with moderate moisture.
Size: Reaches 2' to 4' (60 cm to 1.2 m) tall with a spread of 2' to 4' (60 cm to 1.2 m).
Flowering: Blooms from late spring through early fall.
Propagation methods: division, seeds, cuttings.
Size: Reaches 2' to 4' (60 cm to 1.2 m) tall with a spread of 2' to 4' (60 cm to 1.2 m).
Flowering: Blooms from late spring through early fall.
Propagation methods: division, seeds, cuttings.