Photo by Melody

PlantFiles: Eastern Sweetshrub
Calycanthus floridus var. glaucus

Family: Calycanthaceae
Genus: Calycanthus (kal-ee-KAN-thus) (Info)
Species: floridus var. glaucus

Synonym:Calycanthus glaucus
Synonym:Calycanthus floridus var. laevigatus
Synonym:Calycanthus fertilis

3 vendors have this plant for sale.

6 members have or want this plant for trade.


6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)

4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

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:
Partial to Full Shade

Seed is poisonous if ingested
Parts of plant are poisonous if ingested

Bloom Color:
Maroon (Purple-Brown)

Bloom Time:
Mid Spring
Late Spring/Early Summer


Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
This plant may be considered a protected species; check before digging or gathering seeds
This plant is resistant to deer

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
By dividing the rootball
From softwood cuttings
From semi-hardwood cuttings
From hardwood cuttings

Seed Collecting:
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By DaylilySLP
Thumbnail #1 of Calycanthus floridus var. glaucus by DaylilySLP

By PanamonCreel
Thumbnail #2 of Calycanthus floridus var. glaucus by PanamonCreel

By Zonri
Thumbnail #3 of Calycanthus floridus var. glaucus by Zonri


No positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral Switz On May 17, 2010, Switz from Bucklin, MO (Zone 5b) wrote:

Just bought an Eastern Sweetshrub and the tag said hardy to zone 5. I hope this is the case as we are in north Missouri. Will update as it becomes established.

Neutral berrygirl On Mar 17, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Calycanthus fertilis SWEETSHRUB Dec (z6) (ENa,Fra)
We're solving a mystery:some books say C.fertilis is more fragrant,some say C.floridus. Our fertilis haven't bloomed yet but soon we'll know! For now,these somewhat smlr shrubs have similar wine-colored fls.S-PS/M


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

Albertville, Alabama
Chunchula, Alabama
Glastonbury, Connecticut
Tampa, Florida
Greenville, Indiana
Natchez, Mississippi
Elba, New York
Boone, North Carolina
Waynesville, North Carolina
Hallieford, Virginia
Petersburg, Virginia
Vienna, Virginia

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