Royal Fern (Regalis)

The Royal Fern (Regalis) is generally described as a perennial forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring and summer and fall . Leaves are not retained year to year. The Royal Fern (Regalis) has a long life span relative to most other plant species and a moderate growth rate. At maturity, the typical Royal Fern (Regalis) will reach up to 6 feet high, with a maximum height at 20 years of 0 inches.

The Royal Fern (Regalis) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by container, cuttings, seed, sprigs. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -38°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Moderate
General Type Forb/herb
Growth Period Spring, Summer, Fall
Growth Duration Perennial
Lifespan Long
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Displays Fall Colors Yes
Shape/Growth Form Rhizomatous
Drought Tolerance Low
Shade Tolerance Tolerant
Height When Mature 6
Vegetative Spread Rapid
Flower Conspicuousness No
Fruit/Seed Abundance None
Seed Spread Rate None
Gardening Characteristics
Propagations (Ways to Grow) Container, Cuttings, Seed, Sprigs
Moisture Requirements High
Cold Stratification Required No
Minimum Temperature -38
Soil Depth for Roots 16
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate None
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 4–6 pH
Precipitation Range 32–32 inches/yr
Planting Density 700–1700 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 16
Minimum Frost-Free Days 110 day(s)
Salinity Tolerance None
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Fire Resistant No
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database,
National Plant Data Center, Baton Rouge, LA 70874-4490 USA