St. John's Wort (Hypericum perforatum)

General Plant Information (Edit)
Plant Habit:	Herb/Forb
Life cycle:	Perennial
Sun Requirements:	Full Sun Full Sun to Partial Shade
Water Preferences:	Mesic
Minimum cold hardiness:	Zone 2 -45.6 °C (-50 °F) to -42.8 °C (-45°F)
Maximum recommended zone:	Zone 8b
Plant Height:	45-60 cm
Plant Spread:	40 cm
Flowers:	Showy
Flower Color:	Yellow
Flower Time:	Late spring or early summer Summer Late summer or early fall
Uses:	Erosion control Medicinal Herb Will Naturalize Suitable as Annual
Propagation: Seeds:	Provide light Self fertile Suitable for wintersowing Sow in situ Start indoors Can handle transplanting
Propagation: Other methods:	Cuttings: Root
Pollinators:	Self Flies Bees

Common names

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Comments:

Posted by ZGadev (Varna,Bulgaria) on Jul 14, 2018 8:10 AM concerning plant:

In Bulgarian жълт кантарион.
Perennial herbaceous plant with horizontally creeping rhizome. Stems upright or upward, 20 50 (100) cm high, round or twin. at the top highly branched. The leaves are adjacent, linear to oval lanceolate or ovate. Petals 5, along the edge with black dotted glands, in the upper half with black and reddish (dotted and linear) glands. Fruit egg-shaped 3-socket multi-seed pod. Blooms May - August.
Main action - Regenerative, anti-inflammatory, used against ulcerative disease, depression, eczema (topical application), periodic emotional disorder, melancholic conditions, anxiety, symptoms of smoking cessation, mouth rash, herpes.

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Posted by growitall (Calgary, Alberta, Canada) on Mar 1, 2014 12:23 PM concerning plant:

Has naturalized to become an invasive weed in many areas, spreading by rhizomes and seed.

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Posted by Johannian (The Black Hills, SD - Zone 4b) on Jan 9, 2022 6:06 PM concerning plant:

Range: in the West especially common from California to western Washington.

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Hypericum St. John's Wort (Hypericum perforatum)