Swamp fern, Toothed midsorus fern
Blechnum serrulatum
Blechnaceae


Landscape Uses:

Primarily recommended for natural landscapes and habitat restorations. Also useful as an accent groundcover along pond and lake edges and other moist to wet sites.

Ecological Restoration Notes:

A relatively common understory herb in freshwater swamps throughout South Florida; occasional in freshwater marshes, prairies and wet hammocks.
Availability:
Native plant nurseries.
Description:
Medium to large herbaceous fern with erect fronds.
Height:
Typically 2-4 feet in height. Spreading from underground stems (rhizomes) and forming large, sometimes very dense, patches.
Growth Rate:
Fast.
Range:
Florida from the Panhandle south to Miami-Dade County and the Monroe County mainland; West Indies, Mexico, Central America and South America.
Habitats:
Swamps, marshes, wet prairies and wet hammocks.
Soils:
Wet to moist, poorly-drained to moderately well-drained organic soils.
Nutritional Requirements:
High; requires rich organic soils for optimal growth.
Salt Water Tolerance:
Low; does not tolerate long-term flooding by salt or brackish water.
Salt Wind Tolerance:
Moderate; grows near salt water, but is protected from direct salt spray by other vegetation.
Drought Tolerance:
Low; requires moist to wet soils and is intolerant of long periods of drought.
Light Requirements:
Light shade to moderate shade or full sun.
Flower Color:
N/A.
Flower Characteristics:
There are no flowers; the plants reproduce by spores.
Flowering Season:
All year.
Fruit:
Inconspicuous spores.
Wildlife and Ecology:
Horticultural Notes:
Can be grown from division and spores.
Comments:
An excellent understory fern in a wide variety of wet situations, but can spread aggressively in the right conditions.


Susan Trammell
George D. Gann
George D. Gann
Shirley Denton
Shirley Denton
Shirley Denton