Also known as Hairy Hypericum · Hairy Saint-John's-Wort · Hairy St. John's-Wort
Hairy St John's-Wort (Hypericum hirsutum) is a herbaceous perennial plant with yellow flowers, often found in woodlands and meadows. It is a visually appealing addition t
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers sunny locations but tolerates light shade.
Moderate
50% intensity
Keep soil consistently moist, but not waterlogged.
Chalk, Clay, Loam, Sand
50% intensity
Hardy
25% intensity
Tolerates a wide range of temperatures; hardy in USDA zones.
Low
25% intensity
Feed sparingly in spring.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water Hypericum hirsutum regularly during its growth period, especially in drier conditions. Allow the soil to dry slightly between waterings. Reduce watering in winter, but ensure the soil does not completely dry out.
Consistent moisture promotes healthy foliage and abundant flowering.
Prune Hairy St John's-Wort in late winter or early spring before new growth begins. Cut back old stems to about 10-15 cm above the ground. This encourages vigorous new growth and maintains a tidy appearance.
Deadheading spent flowers can also promote further blooming.
Hypericum hirsutum can be propagated by division of clumps in early spring or by softwood cuttings taken in late spring or early summer. Cuttings should be placed in a well-draining potting mix and kept moist.
Division is a straightforward method for increasing your plant count.
Repot established plants every 2-3 years, preferably in early spring. Choose a pot that is slightly larger than the current one. Use a well-draining potting mix.
Repotting revitalizes the plant, provides fresh nutrients, and prevents it from becoming root-bound.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Hairy St John's-Wort (Hypericum hirsutum)
Where Hairy St John's-Wort (Hypericum hirsutum) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Malpighiales |
| Family | Hypericaceae |
| Genus | Hypericum |
| Species | Hypericum hirsutum |
Similar in genus Hypericum
Answers based on plant encyclopedia data
