Photo by Melody

PlantFiles: Crocosmia
Crocosmia x crocosmiiflora 'George Davison'

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; Year of Registration or Introduction: 1900

Synonym:Montbretia x crocosmiiflora

9 vendors have this plant for sale.

13 members have or want this plant for trade.


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)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
Pale Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
May be a noxious weed or invasive
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:

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

Seed Collecting:
Unknown - Tell us

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There are a total of 8 photos.
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3 positives
3 neutrals
No negatives

Gardeners' Notes:

Positive artsawtreeman 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. Weird! I've not talked to any other gardener who's had that experience.

I've read some of the comments on here. If this plant is too much bother or too invasive for you where you garden, please, try gardening in Minnesota. The experience will make you appreciate gardening success however it comes. I just bought a different cultivar this fall expecting to be pleased again.

Positive Bazuhi 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 positive and at least come spring with Home Depots 1yr guarantee on plants I will always get my money back.

Neutral Sandwichkatexan 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.

Neutral vickyg52 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.

Positive Mr_Crocosmia 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.

Neutral smiln32 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.


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
Grand Mound, Washington

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