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Flowering Fern, Royal Fern
Osmunda regalis 'Purpurascens'

Family: Osmundaceae
Genus: Osmunda (os-MUN-duh) (Info)
Species: regalis (re-GAY-liss) (Info)
Cultivar: Purpurascens

Category:

Perennials

Ferns

Height:

4-6 ft. (1.2-1.8 m)

Spacing:

4-6 ft. (1.2-1.8 m)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Sun to Partial Shade

Danger:

N/A

Bloom Color:

Inconspicuous/none

Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer

Foliage:

Grown for foliage

Burgundy

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From spores

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Tuskegee, Alabama

Smyrna, Georgia

Tracy, Iowa

Belleville, Michigan

Plainwell, Michigan

Chapel Hill, North Carolina

Elizabeth City, North Carolina

Toone, Tennessee

Bellevue, Washington

show all

Gardeners' Notes:

0
positives
2
neutrals
0
negatives
RatingContent
Neutral

On Apr 12, 2011, SilkKnoll from Tuskegee, AL (Zone 8a) wrote:

oops. Don't know that mine are "purpurascens."

Neutral

On May 21, 2010, ChrisZ5 from Tracy, IA (Zone 5a) wrote:

This plant grows is extremely slow growing. I have moved it once when it would not grow more than 1 frond a year. It is slightly larger where I have it planted now. It has been a good 5 years and this year it has 6 fronds which are now approx 6 inches long on May 21.