Basic Sowing Information for the Species Common/Latin Name: Castor oil plant Type: Half hardy annual Temperature: 20-30°C Cover: Average layer vermiculite or compost Date: Sow March/April Advice: Sowing 1 seed per 9cm pot will save on potting on. Ideal bedding/pot plant. Outdoors grow in fertile well drained soil in full sun. Grow on cool. CAUTION toxic if eaten - Do not consume and keep away from children