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Royal fern
Osmunda regalis var. spectabilis

Copyright by: George D. Gann

General Landscape Uses: Specimen or accent groundcover in moist to wet sites.

Availability: Grown by one or two native plant nurseries in South Florida.

Description: large herbaceous fern.

Dimensions: About 3-4 feet in height. About as broad as tall.

Growth Rate: Moderate.

Range: Widespread in eastern and central North America south to Miami-Dade County and the Monroe County mainland; West Indies, Mexico and Central America.

Map of select IRC data from peninsular Florida.

Habitats: Swamps and marshes.

Soils: Wet, poorly-drained organic soils, acid pH.

Nutritional Requirements: High; requires rich organic soils for optimal growth.

Salt Water Tolerance: Low; does not tolerate flooding by salt or brackish water.

Salt Wind Tolerance: Low; salt wind may burn the leaves.

Drought Tolerance: Low; requires moist to wet soils and is intolerant of long periods of drought.

Light Requirements: Full sun to light shade or moderate shade.

Flower Color: N/A.

Flower Characteristics: There are no flowers; the plants reproduce by spores.

Flowering Season: Spring.

Fruit: Inconspicuous spores.

Horticultural Notes: Can be grown from spores.

Comments: It is listed as commercially exploited by the state of Florida.

Copyright by: George D. Gann

Copyright by: Susan Trammell

Copyright by: Shirley Denton

Other data on Osmunda regalis var. spectabilis available from:

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