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Swamp Loosestrife - Wildflower
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Swamp Loosestrife

description Swamp Loosestrife Overview

Swamp loosestrife (Decodon verticillatus), also called water willow, is a deciduous shrub in the loosestrife family native to eastern North America. It grows in marshes, swamps, pond margins, and shallow water, producing clusters of rose-purple flowers during summer. Its long, arching branches can root where their tips touch wet soil or waterlogged substrate, enabling the plant to form dense colonies along wetland margins.

help Swamp Loosestrife FAQ

What is the scientific name of swamp loosestrife?

Swamp loosestrife is Decodon verticillatus, and it is also called water willow. Despite that common name, it belongs to the loosestrife family rather than the true willow genus Salix.

Where does swamp loosestrife grow?

It is native to eastern North America and grows in marshes, swamps, pond margins, and shallow water. Decodon verticillatus is therefore a wetland shrub rather than a dry-site garden plant.

When does swamp loosestrife flower?

Swamp loosestrife produces clusters of rose-purple flowers during summer. The plant is a deciduous shrub, so it does not keep its leaves year-round.

Is water willow a real willow tree?

No. Water willow is a common name for the deciduous shrub Decodon verticillatus, a member of the loosestrife family that grows around wetlands in eastern North America.

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