Ricinis communis 'New Zealand Purple' , or castor oil plant grew to 9' in my front garden last year. Although it has medicinal uses when prepared correctly, all parts of the plant are toxic. Ricin, a chemical compound is found in all parts of the plant. In 1978 it was used as a poison when Georgi Markov, a Bulgarian journalist, was assassinated on London's Waterloo Bridge by a ricin pellet injected into his leg with an umbrella. This piece will be on display at the 2019 Philadelphia Flower Show in the Botanical Art exhibit.