Hypericum swinkianum
Care, watering, light and tips for Hypericum swinkianum on Floravia.
Quick facts
- Family: Hypericaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Hypericum swinkianum
Hypericum swinkianum, commonly known as Swink's St. John's wort, is a small to medium-sized deciduous shrub cherished for its striking bright yellow flowers that emerge in late spring and early summer. Its delicate blossoms, often with prominent stamens, beautifully contrast with its green foliage. This plant is an excellent choice for garden borders, rockeries, or as an accent plant in native gardens, adding a vibrant splash of color.
Native range
Illinois, United States
Care tips
Swink's St. John's wort thrives best in full sun to partial shade, requiring at least 4-6 hours of direct sunlight daily. It prefers well-drained soils, ranging from moderately dry to moist; it's crucial to avoid waterlogging, as it is susceptible to root rot. Water regularly during dry spells, especially in its first year, and consider light pruning after flowering to maintain its shape. A common mistake is planting it in heavy, poorly draining soils, which can lead to health issues.
How to save a dying Hypericum swinkianum
- Warning signs
- Yellow/red leaves, drooping, soft/dry stems. Black spots on leaves (fungus).
- First aid
- Check watering. Prune damaged stems. Repot if soil is compacted. Move to partial shade.
- What kills it
- Overwatering (root rot) or intense direct sun (scorches leaves). Low light weakens it.
- Can it be saved?
- Yes, if roots aren't fully rotted and some green stems remain. Act quickly! 🌿