Sicklepod, Coffeeweed

Senna obtusifolia

Family: Caesalpiniaceae (ses-al-pin-ee-AY-see-ee) (Info)
Genus: Senna (SEN-nuh) (Info)
Species: obtusifolia (ob-too-sih-FOH-lee-uh) (Info)
Synonym:Cassia tora
Synonym:Cassia obtusifolia
Synonym:Cassia humilis





Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)


Unknown - Tell us


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)

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade


Seed is poisonous if ingested

Bloom Color:

Bright Yellow

Bloom Time:

Late Summer/Early Fall

Mid Fall



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:


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


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

Gadsden, Alabama

Montgomery, Alabama

Weaver, Alabama

Barling, Arkansas

Menifee, California

San Diego, California

Apopka, Florida

Bartow, 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

Conway, South Carolina

North Augusta, South Carolina

Rock Hill, South Carolina

Six Mile, South Carolina

Summerville, South Carolina

Magnolia, Texas

Bumpass, Virginia

show all

Gardeners' Notes:


On Sep 22, 2015, Solarray65 from Grand Ridge, FL wrote:

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 that it is trecherous to cattle as it can puncture their guts. Seems to grow well near a soybean (another protein replacement plant) field. Easy to harvest beans when ripe for picking.


On Jun 6, 2008, 1cros3nails4gvn from Bluffton, SC (Zone 9a) wrote:

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 in my yard, i find it to be kind of nice looking with its leaves and yellow flowers.


On Aug 21, 2007, Farmerdill from Augusta, GA (Zone 8a) wrote:

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. The seed can also be roasted and used as a substitute for coffee.