Senna Species, American Sicklepod, Chinese Senna, Coffeeweed, Java-Bean

Sennaobtusifolia

Family
Fabaceae (fab-AY-see-ee)
Genus
Senna (SEN-nuh)
Species
obtusifolia (ob-too-sih-FOH-lee-uh)
Synonym
Cassia obtusifolia
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Seed is poisonous if ingested
Bloom Color
Bright Yellow
Bloom Time
Late Summer/Early Fall
Mid Fall
Other Details
Category
Annuals
Perennials
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
May be a noxious weed or invasive
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)
7.9 to 8.5 (alkaline)
Patent Information
Non-patented
Propagation Methods
From herbaceous stem cuttings
From softwood cuttings
From semi-hardwood cuttings
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Gadsden, Alabama

Montgomery, Alabama

Weaver, Alabama

Barling, Arkansas

Menifee, California

San Diego, California

Apopka, Florida

Bartow, Florida

Bokeelia, Florida

Dunnellon, Florida

Grand Ridge, Florida

Jacksonville, Florida(2 reports)

Saint Petersburg, Florida

Sarasota, Florida

Satellite Beach, Florida

Winter Haven, Florida

Augusta, Georgia

Brunswick, Georgia

Dalton, Georgia

Powder Springs, Georgia

Baton Rouge, Louisiana

Brooklyn, Maryland

Saucier, Mississippi

Salisbury, North Carolina

Conway, South Carolina

North Augusta, South Carolina

Rock Hill, South Carolina

Six Mile, South Carolina

Summerville, South Carolina

Magnolia, Texas

Bumpass, Virginia

show all

Featured Videos

Gardener's Notes:

2
positives
3
neutrals
2
negatives
Sort By:
Sort By:
I
Greensboro, NC | March 2017 | neutral

Have you heard of using this for Kudzu control? I'd want to make quite sure this is NOT another invasive species FIRST, though. Thoughts/experiences?

C
ROSLINDALE, MA | November 2016 | negative

The University of Tennessee extension service has called this "one of the world's worst weeds." [...Read More

C
Barling, AR (Zone 7b) | November 2016 | positive

An annual Senna that is a host plant for Sleepy Orange and Cloudless Sulphur butterflies.

S
Greenfield, IN (Zone 6a) | September 2016 | neutral

This lonely little spriglet popped up in my yard. After some research discovered its "who's it" and now am trying to decide if it stays ...Read More

S
Grand Ridge, FL | September 2015 | positive

I am excited to have this plant and to learn more about its uses. I have read that it is a good protein replacement. I have been told...Read More

1
Bluffton, SC (Zone 9a) | June 2008 | neutral

this plant is a weed and a native to the southeast. it is popping up all over my yard, but is not hard to control. when its not growing i...Read More

F
Augusta, GA (Zone 8a) | August 2007 | negative

A pesky plant to rival ragweed in cultivated fields. It is said the the seeds are are the source of Cassia gum used as a food thickener. ...Read More

Featured
Imperial Moth
(Eacles imperialis)
Greylag Goose
(Anser anser)
Featured
Imperial Moth
(Eacles imperialis)
Greylag Goose
(Anser anser)