Castor Bean Seeds


Castor bean (ricinus communis), also known as the castor oil plant, is the source of the famous ricin poison, a traditional medicine, an ornamental plant, and an industrial source of castor oil. It has been in use as a medicine and vegetable oil since ancient Egypt. Due to the length of its cultivation by humans, its original native habitat is unknown but believed to be Africa. Castor bean plants love warm to tropical climates and have naturalized in southern and south central Europe. Castor bean is prized for its gigantic size (plants can grow to 40 feet in the right climate), its large dramatic leaves, and attractive seed pods.

Growing Instructions: Soak seeds overnight in water to aid in germination. Sow outdoors in the spring after risk of frost has passed and temperatures are consistently above 20°C (40°F) or start indoors a few weeks early. Prefers moist, well-drained soil, but can grow happily in sandy, loamy, and clay soils. The better drainage and the more humus in the soil, the healthier and large the plants will grow. Plants die back in the fall and need to planted from seed anew each spring. Not suitable for container gardening indoors.

  • Ornamental, Medicinal, Poisonous
  • Annual
  • Height: 1.5-12.2 meters (5-40 feet)
  • USDA Hardiness: Zones 10-11

10 Seeds

Availability: 9 in stock

Poison Garden Seeds are available in small packets only. In order to qualify for international shipping each packet must contain less than 50 seeds and no more than 50 packets may be purchased per person. No bulk amounts available.

Weight0.01 kg
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