Photo by Melody

PlantFiles: Crocosmia
Crocosmia 'Emberglow'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Crocosmia (kroh-KOZ-mee-uh) (Info)
Cultivar: Emberglow
Hybridized by Bloom; Year of Registration or Introduction: 1970

Synonym:Crocosmia pottsii x paniculata

4 vendors have this plant for sale.

12 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:
Scarlet (Dark Red)

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:
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)
7.9 to 8.5 (alkaline)

Patent Information:

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

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By GardenGuyKin
Thumbnail #1 of Crocosmia  by GardenGuyKin

By GardenGuyKin
Thumbnail #2 of Crocosmia  by GardenGuyKin

By GardenGuyKin
Thumbnail #3 of Crocosmia  by GardenGuyKin

By GardenGuyKin
Thumbnail #4 of Crocosmia  by GardenGuyKin

By Mr_Crocosmia
Thumbnail #5 of Crocosmia  by Mr_Crocosmia

By Mr_Crocosmia
Thumbnail #6 of Crocosmia  by Mr_Crocosmia

By jessmerritt
Thumbnail #7 of Crocosmia  by jessmerritt

There are a total of 9 photos.
Click here to view them all!


3 positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral jimtomczak On Sep 17, 2012, jimtomczak from Mobile, AL (Zone 8b) wrote:

I planted a collection of 36 6 ea. of 6 dif types. They all came up they all flowered but not a one reached 2'. Not Emberglow or even Lucifier. I will be in touch with the vendor. Perhaps Too much sun? Something I said. Maybe next year.

Positive Mr_Crocosmia On Sep 7, 2006, Mr_Crocosmia from Caistor
United Kingdom (Zone 8b) wrote:

Pottsii X Paniculata
1970, Bloom. Sultry-Red interspecific hybrid from Bressingham Gardens bred by Alan Bloom, the main species in this is Pottsii, hence the flowers. H 90cm. Sets seed readily and fruiting stems sold as cut flowers in Netherlands

Positive bjs_bjs On Oct 27, 2005, bjs_bjs from Oneida, WI wrote:

Planted this variety in my garden in Green Bay, Wis. Zone 4
bloomed from mid June to the end of September. The grower that I bought it from said I could leave it in the ground if I put a heavy mulch on it for winter. I dug it up the end of October and found my one plant had about 10 new corms. I was very pleased with the summer show!

Positive jameso On Jul 5, 2005, jameso from Longview, TX wrote:

Just bought it yesterday and had only placed container with plant in my yard and it attracted a hummingbird immediately.

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.


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

Mobile, Alabama
Oak View, California
Denver, Colorado
Brooksville, Florida
Roswell, New Mexico
Portland, Oregon
Salem, Oregon
Columbia, South Carolina
Beaumont, Texas
Fort Worth, Texas
Gilmer, Texas
Arlington, Virginia
Kirkland, Washington
Oneida, Wisconsin

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