Delicate Pink Flowers
Produces small, attractive pink flowers that bring subtle color to wetland and moisture-rich gardens.
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Marsh St. John's Wort, scientifically known as Triadenum virginicum, is a native wetland wildflower recognized for its delicate pink flowers and attractive green foliage. It naturally grows in marshes, bogs, wet meadows, and other moist habitats. This flowering plant adds natural beauty to rain gardens, pond margins, and suitable water-loving garden landscapes.
Produces small, attractive pink flowers that bring subtle color to wetland and moisture-rich gardens.
Naturally grows in marshes, bogs, swamps, and other consistently moist environments.
A North American native plant suitable for naturalistic wetland and native plant gardens.
Features green foliage that complements its delicate flowers and natural landscape appearance.
| Scientific Name | Triadenum virginicum |
| Synonym | Hypericum virginicum |
| Common Name | Marsh St. John's Wort; Virginia Marsh St. John's Wort |
| Plant Family | Hypericaceae |
| Seed Type | Native Wildflower Seeds |
| Growth Habit | Upright herbaceous perennial |
| Flower Color | Pink to pale pink |
| USDA Hardiness Zones | 4–9, depending on growing conditions |
| Planting Season | Spring or fall |
| Seed Starting | Surface sow or lightly cover seeds; follow species-specific supplier instructions |
| Germination Time | Varies with seed freshness and growing conditions |
| Germination Temperature | Follow supplier-specific germination instructions |
| Sunlight | Full sun to partial shade |
| Soil Requirements | Moist, wet, organic-rich or peaty soil |
| Watering | Keep soil consistently moist; tolerates wet conditions |
| Blooming Season | Summer to early fall |
| Mature Plant Size | Approximately 1–2 feet tall |
| Plant Spacing | Approximately 6–12 inches, depending on planting conditions |
Marsh St. John's Wort adds delicate pink flowers and attractive foliage to wetland gardens, pond edges, and moisture-rich landscapes. Its native perennial growth makes it an interesting choice for naturalized gardens and suitable wildlife-friendly planting areas.
Discover useful information about Marsh St. John's Wort, including its wetland habitat, flowering characteristics, and garden uses.
Marsh St. John's Wort naturally grows in marshes, bogs, swamps, wet meadows, and along pond and lake shores. It is native to eastern and central North America. It grows best in consistently moist environments with suitable sunlight and organic-rich soil.
Marsh St. John's Wort produces small, five-petaled pink to pale pink flowers during summer. After flowering, it develops distinctive three-sectioned seed capsules that can become reddish or maroon as they mature. Its unusual flowers and fruits add natural interest to wetland gardens.
Yes. Triadenum virginicum is well suited to bog gardens, rain gardens, marshy planting areas, and pond margins. It prefers consistently moist to wet soil and can grow in full sun or partial shade. Avoid planting it in locations that remain completely dry for extended periods.