St. John's Wort
Hypericum spp.
Also known as
St John's wort, St Peter's wort
Hypericum calycinum Tasmania by jjharrison89@facebook.com (CC BY-SA 3.0)
Full Sun
Moderate watering
Tender
H1c
RHS hardiness
5°C
Minimum temperature
Expected size
Height | Spread | |
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Max | ||
Min |
Flowering
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spring
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summer
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autumn
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winter
More images of St. John's Wort
St. John's Wort Overview
Hypericum is a large genus containing around 458 species of annuals, herbaceous perennials and evergreen or deciduous shrubs or trees in the Hypericaceae family with a worldwide distribution in a range of zones and habitats. They produce showy yellow flowers with prominent stamens, followed by berry-like seed capsules. Known commonly as St John’s Wort, several species are popular garden plants and there are many cultivars and hybrids available.
Common problems with St. John's Wort
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How to propagate St. John's Wort
Cuttings
By softwood cuttings in summer sub-shrubs and shrubs. Seed in autumn, cultivators by softwood cuttings only in summer; perennials may be propagated by seed or division in autumn or spring.
Division
Seed
Other uses of St. John's Wort
Grown for their conspicuous, yellow flowers with prominent stamens. This shrub is very attractive to bees.