Castor Bean Zanzibariensis Ricinus Communis is a tender perennial in frost free zones and a fast growing annual everywhere else. Castor Bean Zanzibariensis seeds can be started directly outdoors, and this variety of Ricinus Communis is the largest among the castor bean species, Castor Bean Zanzibariensis is a fast growing, bushy shrub that can grow up to 10-15 feet in a single season. This Castor Been features very thick stalks that can be 6 inches in thickness and the enormous umbrella-sized, tropical-looking, green leaves.
Castor Bean Zanzibariensis is wonderful plant for establishing a temporary hedge, and the Zanzibariensis variety can be grown in large containers for its exotic appearance. Ricinus Communis seeds are easy to grow, and the established Castor Bean plant likes hot, humid conditions, growing best in full sun. Castor Bean Zanzibariensis is the magnificent annual plant that provides a quick, tropical-like shade.
Height: 92 Inches
Bloom Season: Summer/Fall
Environment: Sun/Partial Shade
Soil Type: Rich, Moist well-drained, pH 5.8-7.0
USDA Zones: 8-11 (As Perennial) All Regions of North America (As Annual)
Sow Indoors: Spring (6-8 weeks before last frost)
Sow Outdoors: Spring
Seed Depth: 1/4 Inch
Germination Time: 10-20 Days