marsh fern

Thelypteris confluens

FernAspleniaceae

marsh fern
USDA zones3 to 8
SunHandles partial shade to full shade
WaterHandles moderate or wet soil
Size18 to 24 inches tall2 to 3 feet wide
Bloom color
Non-flowering

Garden uses

NaturalizedRain garden

Notes

Marsh fern (Thelypteris confluens) is a fern for rain gardens and naturalized areas. It is hardy to USDA zone 3, or down to -40°F (-40°C). This plant likes part to full shade and average to wet soil. It does not flower, so you grow it for its fine green fronds. It reaches 18 to 24 inches tall and spreads 24 to 36 inches wide.

Pairs well with Golden ragwort, Swamp aster, and Water sedge.

Native range

Tropical Africa and Asia.