Osmundastrum cinnamomeum

Photographs belong to the photographers who allow use for FNPS purposes only. Please contact the photographer for all other uses.

Cinnamon Fern


Also known as Osmunda cinnamomea

Plant Specifics

Size:3-4 ft ft tall by as broad as tall ft wide.  Does not spread.
Life Span:Long-lived perennial
Flower Color:NA
Fruit Color:Orange
Phenology:Deciduous to evergreen. Fertile fronds appear in spring.
Noted for:Showy fruits, Interesting foliage


Recommended Uses:Useful as a specimen in moist areas. Its urn shape and orange spore producing fertile leaves make this fern attractive as an individual specimen in areas that have adequate moisture. Large size and grace are its principal appeal. Evergreen in south-central FL. Deciduous in north FL.
Considerations:Needs periodic removal of old (dead) fronds.
Availability:Native nurseries, Quality nurseries, Specialty providers
Light: Part Shade,  Shade
Moisture Tolerance:
always floodedextremely dry
 (Stays Wet ----- to ----- Somewhat moist, no flooding)
Moisture Tolerance: Stays Wet ----- to ----- Somewhat moist, no flooding
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray/ Salty Soil Tolerance:Low/no tolerance of salty wind or direct salt spray
Soil or other substrate:Organic material (muck), Sand
Soil pH:Acidic


Native Habitats:This species typically grows on seepage edges of swamps and in the upper reaches of baygalls (bay swamps). It is not found in long-term standing water though it grows well on rotten logs and hummocks in swamps. It is an indicator of seepage conditions.

Distribution and Planting Zones

Natural Range in Florida
USDA Zones

Suitable to grow in:
10A 10B 8A 8B 9A 9B 

USDA zones are based on minimum winter temperatures


General Comments:Called cinnamon fern because of the color of its fertile fronds. In Florida it sends up its fertile fronds in the spring and fall; farther north in its large range, the fertile fronds only emerge in the spring.