Ricinus Species, Castor Bean, Caster Oil Plant

Ricinuscommunis

Family
Euphorbiaceae (yoo-for-bee-AY-see-ee)
Genus
Ricinus (RISS-i-nus)
Species
communis (KOM-yoo-nis)
Synonym
Other Details
Water Requirements
Foliage Color
Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
Seed Collecting
Regional

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

Decatur, Alabama

Dothan, Alabama

Tuscumbia, Alabama

Tuskegee, Alabama

Glendale, Arizona

Green Valley, Arizona

Mesa, Arizona

Phoenix, Arizona

Cabot, Arkansas

Mammoth Spring, Arkansas

Siloam Springs, Arkansas

GARDEN VALLEY, California

Gardena, California

Oildale, California

Reseda, California

San Diego, California

Santa Barbara, California

Vista, California(9 reports)

Clifton, Colorado

Bartow, Florida

Boca Raton, Florida

Bradley, Florida

Casselberry, Florida

Defuniak Springs, Florida

Deltona, Florida

Fort Lauderdale, Florida

Hawthorne, Florida

Jacksonville, Florida(2 reports)

Miami, Florida

New Port Richey, Florida

Pompano Beach, Florida

Sarasota, Florida

Tampa, Florida

Augusta, Georgia

Conyers, Georgia

Villa Rica, Georgia

Honomu, Hawaii

Kapaa, Hawaii

Wailua Homesteads, Hawaii

Nampa, Idaho

Chicago, Illinois

Hinsdale, Illinois

Mount Prospect, Illinois

Murphysboro, Illinois

Washington, Illinois

Carmel, Indiana

Lexington, Indiana

Hutchinson, Kansas

Barbourville, Kentucky

Bowling Green, Kentucky(2 reports)

Ewing, Kentucky

Louisville, Kentucky

Coushatta, Louisiana

Centreville, Maryland

Bellaire, Michigan

Caledonia, Michigan

Lees Summit, Missouri

Saint Peters, Missouri

Billings, Montana

Dunellen, New Jersey

Albany, New York

Brooklyn, New York

West Kill, New York

Yonkers, New York

Durham, North Carolina

Hamptonville, North Carolina

Raleigh, North Carolina

Dundee, Ohio

Newark, Ohio

Sandusky, Ohio

Toledo, Ohio

Hulbert, Oklahoma

Mccurtain, Oklahoma

Oklahoma City, Oklahoma

Sand Springs, Oklahoma

Freedom, Pennsylvania

Lansdowne, Pennsylvania

Mercer, Pennsylvania

Washington, Pennsylvania

Grenoble, Rhône-Alpes

Conway, South Carolina

Summerville, South Carolina

La Follette, Tennessee

Lafayette, Tennessee

Lawrenceburg, Tennessee

Lenoir City, Tennessee

Arlington, Texas

Austin, Texas

Houston, Texas

Kurten, Texas

La Vernia, Texas

Marquez, Texas

Mcallen, Texas

Nacogdoches, Texas

New Braunfels, Texas

Paris, Texas

Richmond, Texas

San Antonio, Texas(2 reports)

Spicewood, Texas

Trinity, Texas

Chesapeake, Virginia

Leesburg, Virginia

White Marsh, Virginia

Kalama, Washington

Seattle, Washington

Altoona, Wisconsin

Butte Des Morts, Wisconsin

Crivitz, Wisconsin

Racine, Wisconsin

show all

Featured Videos

Gardener's Notes:

18
positives
14
neutrals
8
negatives
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R
catskills, NY (Zone 5a) | May 2017 | positive

I received a plant already a foot high last year in zone 5 NY and it did very well. I saved the seeds over the Winter and would like to s...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

L
Centreville, MD | July 2013 | neutral

I didn't expect this plant to return after winter here in Eastern Maryland, (zone 7) but it has been possibly both root hardy and/or rese...Read More

G
Kapaa, HI | December 2008 | neutral

This stuff grows all over the place here in Hawaii, mostly the roadsides and other disturbed areas. I yank it whenever it sprouts in the ...Read More

T
Decatur, AL (Zone 8a) | November 2008 | positive

I love Castor Beans, as they remind me to my childhood. My Mom grew them every year and gave me seeds shortly before she died. I planted ...Read More

T
Suches, GA | October 2007 | neutral

MOLE CHASER--Haven't used the plant to get rid of moles but purchased 75% castor oil solution from Home Depot. Works well for 6-8 weeks...Read More

D
Nacogdoches, TX | September 2007 | negative

I got seeds on ebay and planted them late june . Now they are 15 ft high and blossoming. I live in deep east texas . I got them to get ...Read More

H
Coral Springs, FL (Zone 10b) | June 2006 | positive

This plant was a volunteer in my garden this year, probably from bird droppings. It came up under an oak and in dappled light. As I writ...Read More

W
W
Hulbert, OK (Zone 7a) | February 2006 | positive

Here in Northeastern Oklahoma we grow many castor bean plants each summer. The immense size of the plants, the hues of the foliage, I can...Read More

G
(Zone 5a) | January 2006 | positive

Castor bean is a fast growing annual in zone 5, but my information says it is hardy in zones 8-10. It adds a very tropical look to the g...Read More

I
Denver, CO | October 2005 | positive

I would like to boast that this year, my Ricinus are 15 FEET TALL. -And I'm in Colorado! (My goal is 20' next year... ha ha) They will ...Read More

Y
| August 2005 | positive

I have grown this plant in Toronto, Ontario. and Orillia, Ontario. it grows very good here , they grow to approx 6 feet tall.
...Read More

H
Moss Beach, CA, CA (Zone 9a) | July 2005 | negative

In 1964 received a necklace strung with brightly speckled beans (that a friend had brought back from Jamacia as a gift, which, as a 12 ye...Read More

V
V
| April 2005 | positive

This plant grows very fast. It conquers land that is not used in a small time. However having a caster tree in your garden can save other...Read More

G
Yonkers, NY (Zone 5b) | January 2005 | positive

I have grown castors in containers & LOVED them. They don't get out of control that way - also not as HUGE as they get if planted in the ...Read More

A
Murphysboro, IL (Zone 7a) | August 2004 | positive

This attractive plant grows 16' tall in one summer here in southern Illinois! I just love the tropical look the Castor Bean adds to a gar...Read More

M
Bartow, FL (Zone 9a) | August 2004 | negative

It was reported that planting castor beans in the vegetable garden during summer would rid the soil of nematodes. With caution, we plant...Read More

N
Boca Raton, FL (Zone 10a) | August 2004 | negative

Castor Bean is very invasive in my South Florida area. It is a very fast-growing weed that quickly colonizes undisturbed sites around far...Read More

C
Rock Hill, SC (Zone 7b) | July 2004 | positive

This is an incredible plant and I recommend it strongly to anyone who is willing to be careful in regard to its poisonous properties. I ...Read More

T
Sierra Vista, AZ (Zone 8b) | June 2004 | negative

you can't kill this bugger,...it KEEPS coming back. Evryday Im out in the horse paddocks looking for sprouts of this nasty thing ! I wo...Read More

K
K
Mount Prospect, IL (Zone 5a) | June 2004 | neutral

I had this plant last year as a focal point in front of my home (north side!). I saved a few of the seeds for my neighbor and myself to ...Read More

T
Lake Placid, FL (Zone 9b) | June 2004 | positive

Roots quickly and easily from stem cuttings.

It is great screening plant. I use mine as screens until my permanent plants ...Read More

F
Honomu, HI (Zone 11) | April 2004 | negative

As in the area where Monocromatico lives, this plant tends to take over wildly in abandoned fields here...you see many of them growing in...Read More

J
Jacksonville, FL (Zone 8b) | April 2004 | neutral

I've had these plants for the last 3 years, one on each side of the front entrance to my house. They make striking statements with their...Read More

J
| February 2004 | neutral

I live in Ocala Florida, I planted one caster bean seed beside my house, it grew straight up, with only one stock, the leaves stayed gree...Read More

M
(Zone 11) | April 2003 | negative

Riccinus comunis grows like a plague over here in any abandoned area, sometimes invading remainings of wild vegetation. One plant could b...Read More

R
R
Palmyra, NJ | April 2003 | positive

I planted the seeds of this plant 3/31/03 ,they emerged 4/6/03.Prior to planting i soaked them in water 24 hrs.At the end of that period ...Read More

L
Ellettsville, IN | April 2003 | positive

I love the castor bean plant, its foliage is beautiful and it makes a wonderful backdrop in the large garden. I am growing seed now for ...Read More

B
| March 2003 | positive

I've grown this plant as a hedge along my lawn and loved it. We have to grow it as an annuabecause I live in northern Ontario Canadaand t...Read More

H
| March 2003 | positive

The Purple leaved variety (smaller) is known as R.Zanzibariensis. It´s leaves are dark purple to almost black.

A
Wavre/ greenhous +/- 2500 species, IA | February 2003 | neutral

The castor oil plant is a species belonging to the family of the Euphorbiaceae, even if its appearance is completely different. This plan...Read More

G
| January 2003 | negative

I had recently acquired an oceanfront property in Central Florida. After wrestling dozens of these ugly monsterous "weeds" from the land ...Read More

B
B
Baa
| October 2002 | neutral

A shrub from North Africa and Western Asia. Sometimes grown as an annual in more northerly climates or as a herbaceous perennial.
...Read More

A
| September 2002 | positive

Impressive growth from late planting, Gorgeous coloured foliage, bloom and seed pods.

M
M
| September 2002 | neutral

I love my castor bean plant. It is large and a beautiful backdrop.

O
O
| July 2002 | positive

As a lover of Large ornamental annual plants, I have had alot of experience with this one, and believe me it can reach a height of 15 fee...Read More

A
Bakersfield, CA (Zone 9b) | July 2002 | neutral

The seeds to the Castor Bean Plant are very toxic. There is no other plant that in its natural state that is more POISONOUS. The plant...Read More

E
E
(Zone 4b) | August 2001 | neutral

Castor Bean is perennial in warm places. Seeds are killing poisonous.

D
D
Pisgah Forest, NC | February 2001 | neutral

Also called Mole Bean, this gorgeous plant will drive moles, voles and other pests from the area. The castor bean produces castor oil.

G
Wentworth, SD (Zone 4a) | December 2000 | neutral

Castor bean has extremely poisonous seeds! The plant grows to 8-10' tall and 3-4' wide. The flowers are red or red-green and the foliag...Read More

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