How to Grow and Care for Marsh St. John's wort

Virginia marsh St. John's wort (Triadenum virginicum) is a small flowering plant from central and eastern North America. It grows in bogs, wet meadows, fens, marshes, and other damp soil types. The flowers bloom in summer and, in contrast to the yellow flowers of most St. Johns wort species, come in as pink or red.

Fraser's marsh St. John's wort (Triadenum fraseri) lives in many types of wetlands throughout the United States and southern Canada. The stems grow up to 60 cm high and sprout leaves that appear to have a bluish, purplish, or even pinkish tinge. Though ordinary St. John's wort is sold as an herbal dietary supplement, fraser's marsh St. John's wort is not the same plant and cannot be used the same way.

Triadenum breviflorum (Triadenum breviflorum) is a species of Marsh St. John's Wort that is only found in the wild in rice fields, ditches, roadsides, and wet grasslands. The plant's specific epithet, breviflorum, means "short-flowered" and refers to the plant's small white flowers which bloom in summer.

Greater marsh St. John's wort boasts a robust stature with fleshy, lance-shaped leaves that uniquely cluster at stem joints. Often found in wetlands, its growth reflects the moisture-rich habitats it prefers. Pink to rose-purple flowers grace the plant in late summer and are a distinctive trait that aids identification, attracting pollinators which thrive in such environments.