Virginia Marsh St. Johnswort
(Triadenum virginicum)
Virginia Marsh St. Johnswort (Triadenum virginicum)
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Doug McGrady
CC BY 2.0
Image By:
Doug McGrady
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Copyright:
CC BY 2.0
Copyright Notice:
Photo by: Doug McGrady | License Type: CC BY 2.0 | License URL: https://creativecommons.org/licenses/by/2.0/ | Uploader: Doug_McGrady | Publisher: Flickr
Estimated Native Range
Summary
Triadenum virginicum, commonly known as Virginia Marsh St. Johnswort, is a deciduous perennial herb native to wetland habitats such as bogs, marshes, and wet meadows in the South and Eastern United States and parts of Canada. It typically grows up to 70 cm (28 in) in height and features sessile, opposite leaves that are sometimes clasping. The plant produces flowers up to 15 mm (0.6 in) in diameter, with five pink petals, blooming from summer to early fall. The flowers are modest in appearance but add a delicate touch to wetland areas.
Virginia Marsh St. Johnswort thrives in wet conditions and is often used in rain gardens, water features, and naturalized wetland plantings. It is valued for its adaptability to wet soils and its contribution to the biodiversity of wetland ecosystems. In cultivation, it requires full sun to partial shade and consistently moist to wet soil conditions. While it is not a common garden plant, it can be used to great effect in the right water-rich environment. Care should be taken to ensure it is not planted in areas where it can become invasive.CC BY-SA 4.0
Virginia Marsh St. Johnswort thrives in wet conditions and is often used in rain gardens, water features, and naturalized wetland plantings. It is valued for its adaptability to wet soils and its contribution to the biodiversity of wetland ecosystems. In cultivation, it requires full sun to partial shade and consistently moist to wet soil conditions. While it is not a common garden plant, it can be used to great effect in the right water-rich environment. Care should be taken to ensure it is not planted in areas where it can become invasive.CC BY-SA 4.0
Plant Description
- Plant Type: Herb
- Height: 1-2 feet
- Width: 0.25-0.5 feet
- Growth Rate: Moderate
- Flower Color: Pink
- Flowering Season: Summer
- Leaf Retention: Deciduous
Growth Requirements
- Sun: Full Sun
- Water: High
- Drainage: Slow, Medium, Fast
Common Uses
Water Garden
Natural Habitat
Native to wetland habitats such as bogs, marshes, and wet meadows
Other Names
Common Names: Marsh St. John’s-Wort
Scientific Names: , Triadenum virginicum, Hypericum virginicum, Triadenum virginicum subsp. virginicum, Elodea virginica, Elodes virginica, Hypericum campanulatum, Elodea campanulata, Elodes campanulata, Androsaemum emarginatum
GBIF Accepted Name: Triadenum virginicum (L.) Raf.