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Crocosmia 'George Davison'

Crocosmia x crocosmiiflora

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Crocosmia (kroh-KOZ-mee-uh) (Info)
Species: x crocosmiiflora (kroh-koz-mee-eye-FLOR-uh) (Info)
Cultivar: George Davison
Additional cultivar information:(aka Rowden Chrome)
Hybridized by Davison
Registered or introduced: 1900
Synonym:Montbretia x crocosmiiflora




Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun



Foliage Color:

Unknown - Tell us


24-36 in. (60-90 cm)


6-9 in. (15-22 cm)

9-12 in. (22-30 cm)


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)

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:

Pale Yellow

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Late Summer/Early Fall

Other details:

May be a noxious weed or invasive

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

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

Seed Collecting:

Unknown - Tell us


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


Trinity, Alabama

Cabot, Arkansas

Sebastopol, California

Boulder, Colorado

Macon, Georgia

Rincon, Georgia

Thomasville, Georgia

Chicago, Illinois

Downers Grove, Illinois

Marshall, Illinois

Noblesville, Indiana

Minneapolis, Minnesota

Roswell, New Mexico

Elizabeth City, North Carolina

Glouster, Ohio

Dallas, Oregon

Allentown, Pennsylvania

Columbia, South Carolina

Fort Worth, Texas

South Jordan, Utah

Arlington, Washington

Bellevue, Washington

Grand Mound, Washington

show all

Gardeners' Notes:


On Jan 2, 2015, artsawtreeman from Minneapolis, MN wrote:

I first grew crocusmia in '09 in Scandia, MN purchased as a potted patio plant. I had no previous knowledge or experience with it, intended to add it to my urns for height. The first fall I planted it out in a south facing bed between the house and drive when I moved to Milwaukee. When I finally read up on the culture for crocusmia and found it recommended for zone 6 or warmer or treat it like other corms like glads in colder zones I dug it up (in January) and planted it out in the spring. It grew prolifically that 2nd year and bloomed beautifully. Dug them again that fall, moved to Mankato, MN and replanted for a 3rd season but with a mixed surprise. Some bloomed with flowers typical of crocusmia, others flowered like gladiolas and when dug that fall had bulbs like glad bulbs. Weir... read more


On Sep 5, 2012, Bazuhi from Downers Grove, IL (Zone 5a) wrote:

I have seen these the last couple of years at the Home Depot and finally this year I purchased this plant which is grown by Hampshire Farms and is tagged "George Davidson" along with the Montbretia "Lucifer" without doing any research on the plants. The plant is blooming like crazy and it is September 5th, the problem is I have been finding it listed as a zone 6 plant and occasionally as a zone 5 plant with winter protection. Some treat it as an annual, others treat it as Canna and lift it, and starting it from seed takes 3 years till bloom. I wish I had known that as I would have not have bothered with the plant. As it stands now I will leave it in the ground and come this winter cover it with a dome and see how it fairs next spring. I do love the flowers on the plant so I gave it a posit... read more


On May 21, 2012, Sandwichkatexan from Copperas Cove, TX wrote:

I really want to grow these , But I am afraid that they may become an invasive monster . I am sure they are beautiful in large groupings . Does anyone have advice on this plant ? I am already dealing with lantana camara that I thought would be beautiful and ended up being a chore . I hear from many that in the south crocosmia become monsters that are nearly impossible to thin or get rid of . Please help with any suggestions.


On Aug 14, 2010, vickyg52 from Merrick, NY wrote:

just purchased "crocosmia davidson". Said to be dwarf variety 16". I love the color yellow-orange flowers! Awesome! I'll keep you posted to see how it does on Long Island, NY.


On Jul 10, 2006, Mr_Crocosmia from Caistor,
United Kingdom (Zone 8b) wrote:

Large Orange-Yellow flowers, 8 to 10 branched, tinted deeper Orange externally. It is amongst the first to flower. Strongly recommended. Vigorous grower. RHS Award of Merit, 1902. Also sometimes known as Golden Sheaf.
Grows to around 1m high.

Davesgarden has the spelling of the plant wrong......... as Berrygirl said it should be George Davison not Davidson.


On Nov 30, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Plant corms in spring after last frost date approximately 3-4 deep and 6 apart. In colder zones, mulching is necessary to ensure they are protected from winter's harsh weather. In warmer climates, keep in a somewhat shady area for hot afternoon temps.

Flowers are large and the color is a rich deep yellow to medium apricot. They are also more upright than other Crocosmias.