Also known as Elegant St John's-Wort · Slender Saint-John's-Wort · Slender St. John's-Wort
Slender St John's-Wort (Hypericum pulchrum) is a delicate perennial herb native to Europe, featuring slender stems and bright yellow flowers that bloom from June to Augus
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers full sun but tolerates partial shade, especially in hot climates.
Moderate
50% intensity
Keep soil consistently moist but not waterlogged.
Well-drained, sandy, loamy
50% intensity
Hardy
50% intensity
Tolerates a wide range of temperatures. Prefers cooler conditions but survives heat.
Low
25% intensity
Generally does not require heavy feeding. Light feeding in spring is sufficient.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly to keep the soil consistently moist, especially during dry periods. Allow the top 2-3 cm of soil to dry out slightly between waterings. Reduce watering in winter when the plant is dormant.
Avoid waterlogged conditions, which can lead to root rot.
Prune in early spring before new growth begins to encourage a more compact and bushy habit. Remove any dead, damaged, or crossing stems.
Cut back previous year's growth to about 5-10 cm from the ground to promote fresh flowering shoots. Deadheading spent flowers can prolong blooming.
Easily propagated from seed sown in autumn or spring. Seeds may require a period of cold stratification. Alternatively, take softwood cuttings in late spring or semi-hardwood cuttings in mid-summer.
Root cuttings in a well-draining potting mix with bottom heat.
Repot container-grown plants every 2-3 years in early spring or autumn. Choose a pot that is slightly larger than the current one. Use a well-draining compost, such as a mix of loam, sand, and peat.
Ensure good drainage to prevent waterlogging.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Slender St John's-Wort (Hypericum pulchrum)
Where Slender St John's-Wort (Hypericum pulchrum) 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 pulchrum |
Similar in genus Hypericum
Answers based on plant encyclopedia data
