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Castor Bean
Scientific Name: Ricinus communis L.
Family: Euphorbiaceae
Castor Bean (Ricinus  communis)
Ricinus communis 'Carmencita' in New York Botanical Garden
Recommended Temperature Zone:
sunset: All zones as an annual
USDA: All zones as an annual

Frost Tolerance: Perennial shrub in zone 9 and warmer

Heat Tolerance: Some afternoon shade is better in the low deserts

Sun Exposure: Full sun

Origin: Asia and Africa

Growth Habits: Tender evergreen perennial usually grown as a half-hardy annual, grows up to 6-12 feet tall (1.8-3.6 m), 6 feet wide in a season (1.8 m), as a tree, up to 25 feet tall (7.5 m); palmate leaves, up to 18 inches long and wide (45 cm)

Watering Needs: Regular water

Propagation: Seeds

Seeds can be deadly if ingested, the foliage can generate serious allergies.
The castor bean tree is used to generate rapidly a tropical effect.

Cultural Practices:
Soak the seeds in warm water overnight. Start the seeds indoor, 0.75 inch deep (2 cm), at 70 to 85F (21 to 29C). Plant 6-8 week old seedlings 3 feet apart. Seeds can also be sown in place. Depending on the location, the castor bean might self seed.

Blooming Habits:
Male and female flowers are separate, both unimpressive. The female flowers are followed by a spiny red capsule, 0.5 to 1 inch in diameter (12-25 cm), containing 3 attractively colored mottled seeds.

Fruiting Habits:

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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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