Ricinus, Castor Bean, Castor Oil Plant, Red Castor Bean 'Carmencita'

Ricinus communis

Family
Euphorbiaceae (yoo-for-bee-AY-see-ee)
Genus
Ricinus (RISS-i-nus)
Species
communis (KOM-yoo-nis)
Synonym
Sun Exposure
Full Sun
Foliage
Evergreen
Height
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
Spacing
36-48 in. (90-120 cm)
Hardiness
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 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
All parts of plant are poisonous if ingested
Bloom Color
Red
Bloom Time
Late Summer/Early Fall
Other Details
Category
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Burgundy/Maroon
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
From seed; direct sow after last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Bag seedheads to capture ripening seed
Properly cleaned, seed can be successfully stored
Regional

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

Lincoln, (258 reports)

Arley, Alabama

Huntsville, Alabama

Mobile, Alabama

Vincent, Alabama

Chandler, Arizona

Glendale, Arizona

Kingman, Arizona

Mesa, Arizona

Queen Creek, Arizona

Blytheville, Arkansas

Amesti, California

Corralitos, California

Elkhorn, California

Encinitas, California

Interlaken, California

Lompoc, California

Los Angeles, California

Pajaro, California

San Francisco, California

San Leandro, California

Vacaville, California

Watsonville, California

Bartow, Florida(2 reports)

Defuniak Springs, Florida

Dunnellon, Florida

Fort Lauderdale, Florida

Jacksonville, Florida(2 reports)

Ocala, Florida

Port Charlotte, Florida

Sarasota, Florida

Winter Haven, Florida(2 reports)

Carrollton, Georgia

Clarkston, Georgia

Commerce, Georgia

Villa Rica, Georgia

Hilo, Hawaii

Chadwick, Illinois

Chicago, Illinois

Collinsville, Illinois

La Grange Park, Illinois

Mount Prospect, Illinois

Zion, Illinois

Highland, Indiana

Davenport, Iowa

Brookville, Kansas

Osage City, Kansas

Alexandria, Kentucky

Frankfort, Kentucky

Shepherdsville, Kentucky

Lake Charles, Louisiana

Berwick, Maine

Cumberland, Maryland

Brown City, Michigan

Dearborn Heights, Michigan

Winona, Minnesota

Rienzi, Mississippi

Smithville, Mississippi

Blue Springs, Missouri

Saint Louis, Missouri

Saint Peters, Missouri

Warrensburg, Missouri

Missoula, Montana

Dover, New Hampshire

Plainfield, New Jersey

Tuckerton, New Jersey

Albuquerque, New Mexico

Spencer, New York

Wallkill, New York

Williamson, New York

Kure Beach, North Carolina

Rowland, North Carolina

Cincinnati, Ohio

Columbia Station, Ohio

Dundee, Ohio

Hulbert, Oklahoma

Jay, Oklahoma

Portland, Oregon

Central City, Pennsylvania

Lansdowne, Pennsylvania

Mercer, Pennsylvania

Philadelphia, Pennsylvania

Conway, South Carolina

Fair Play, South Carolina

Murrells Inlet, South Carolina

North Augusta, South Carolina

North Myrtle Beach, South Carolina

Okatie, South Carolina

Summerville, South Carolina

Sumter, South Carolina

Cookeville, Tennessee

Lafayette, Tennessee

Mc Minnville, Tennessee

Aransas Pass, Texas

Austin, Texas(3 reports)

Brownsville, Texas

Collinsville, Texas

Elgin, Texas

Flower Mound, Texas

Fort Worth, Texas(4 reports)

Garland, Texas

Houston, Texas

Humble, Texas

Hutchins, Texas

Madisonville, Texas

Quitman, Texas

Richmond, Texas

San Antonio, Texas(2 reports)

Santa Fe, Texas

Wichita Falls, Texas

Provo, Utah

Springdale, Utah

Castlewood, Virginia

Elkton, Virginia

Mc Lean, Virginia

Clarkston, Washington

Clarkston Heights-Vineland, Washington

Kalama, Washington

Port Orchard, Washington

Sumner, Washington

West Clarkston-Highland, Washington

Racine, Wisconsin

show all

Featured Videos

Gardener's Notes:

19
positives
3
neutrals
1
negative
Sort By:
Sort By:
I
I
Redwood City, CA | September 2016 | positive

Like everybody else, I have had unbelievable luck with this plant self-sowing. A seed hitchhiked from my old house and then sowed itself...Read More

C
ROSLINDALE, MA | March 2016 | neutral

This species has naturalized in 34 states. As far north as Maine, it can overwinter as a self-sowing annual.

Where it is h...Read More

G
Flower Mound, TX | August 2012 | positive

I love this plant!!!
Its nice to always look forward to seeing it outside my windows every morning, and I get a lot of great compl...Read More

B
Smithville, MS (Zone 8a) | November 2011 | positive

After the tornado struck our town, I was able to return to our old home place and find that the seeds survived the disaster and had begun...Read More

D
Quitman, TX (Zone 8a) | August 2010 | positive

Easy to grow, plant the seed after the last frost and when the soil has warmed. Grows fast, especially with water and a bit of balanced ...Read More

D
Brookville, KS (Zone 5b) | July 2010 | positive

I have four annuals I grew from seed obtained in a trade here, and every leaf is different than every other leaf. Only one came true re...Read More

R
Frankfort, KY (Zone 6a) | July 2009 | positive

As a kid in Florida we would pick clusters of these seed and throw them at each other, brings back old memories, Oh what kids will do....Read More

T
Durango, CO | March 2009 | positive

This is an easy and fast growing plant. The big leaves give it a tropical look, although I am always afraid that my neighboors are going...Read More

N
Provo, UT | March 2009 | positive

We use this plant every year in the tropical area of our gardens. It readily reseeds itself, but we plant a few seeds just to make sure...Read More

R
| March 2009 | negative

Hello from New Zealand - Auckland has a marine climate, warm, with little frost. Some 50 years ago,as a teenager, I noted this unusual s...Read More

S
Wesley Chapel, FL (Zone 9a) | June 2008 | positive

I love this plant.

I just transferred one - about a foot tall. I didn't get any soil when I dug it up - just bare root. Al...Read More

C
| April 2008 | positive

This is grown as an annual up in Alberta,Canada. Any sign of flowers on them are removed in my garden because I have pre-schoolers visi...Read More

B
Carrollton, GA (Zone 7b) | February 2008 | positive

Even though this site says not to over water, this plant grows best for me in my bog garden. Last year it reached well above 8ft! Love this one!

W
Alexandria, KY | February 2008 | positive

Here in Kentucky, many people know these unusual plants as mole bean plants. I've never seen the plant available commercially. My family ...Read More

M
Deer Park, TX (Zone 9a) | October 2007 | neutral

Ricinus
This genus from northeastern Africa and southwestern Asia contains a single species, a fast-growing, tree-like shrub grow...Read More

C
Austin, TX (Zone 8b) | July 2006 | positive

I planted a 3 inch CB in April, and it's now 4 feet tall in late July! I will always plants these from now on...the flowers are just ama...Read More

C
C
Winter Haven, FL | February 2005 | positive

I don't know why people consider these "invasive". I think they are purely gorgeous plants and you have complete control over them. If yo...Read More

8
8
Zion, IL (Zone 5a) | November 2004 | positive

The first year I grew them, my son came in one day and asked why I had fake plants in the yard when I had so much other stuff!!
St...Read More

J
Garland, TX | August 2004 | positive

These plants cannot survive freezing weather. I gather my seed in the fall. About 6 weeks before the last frost, I plant the seed in pe...Read More

M
Bartow, FL (Zone 9a) | April 2004 | neutral

We grew this plant in our vegetable garden one summer. It was recommended to control rootknot nematodes, but didn't seem to work. Knowi...Read More

P
Highland, IN (Zone 6a) | April 2004 | positive

I,ve been growing these monster plants for about 20 years. i got the seeds from my father he use to grow them in the yard for moles the s...Read More

K
K
Mount Prospect, IL (Zone 5a) | September 2003 | positive

In my zone 4B/5A garden this is obviously an annual - but I planted this from a 3" pot in late spring and it is now 7 feet tall and still...Read More

M
| September 2003 | positive

I got this seed from my grandmother, planted it in the spring. This plant is now about 6 feet tall and really pretty.

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