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Decodon verticillatus

Water Willow

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General

Known as water-willow or swamp loosestrife, is a wetland plant native to North America. It features clusters of small, star-shaped pink flowers that bloom along its branching stems, which grow in whorls around the upright, aquatic stems. Adaptable to both standing water and moist soil conditions, Decodon verticillatus serves as an important component of wetland ecosystems, providing habitat and food for various aquatic wildlife.

Plant Description

Presents slender, upright stems adorned with whorls of glossy, lance-shaped leaves that taper to a point. Its delicate pink flowers bloom in dense clusters atop the stems, adding a splash of color to marshy and wetland habitats.

Height (ft)

8

Soil moisture

Moist to wet

Soil types

Sandy, loamy

Wetland indicator

OBL

Shade tolerance

Full Sun to part shade

Bloom color

Pink to purple

Bloom period

Mid-summer to early fall

Drought tolerance

Intolerant

Salinity tolerance

Low

Self-Pollinating?

No

Range

Found primarily in regions with wetland habitats, including along the Atlantic coast from Maine to Florida, westward to the Great Lakes region, and southward along the Mississippi River valley.

Range Image

Kartesz, J.T. 2024. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP) [website http://bonap.org/]

New England Wetland Plants

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14 Pearl Lane
South Hadley, MA 01075

413-548-8000

info@newp.com

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M-F, 8:00 – 12:00 and 1:00 – 4:00
By appointment only

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