Ask the Master Gardener: Castor bean plants can be a dramatic addition to a garden - Brainerd Dispatch | News, weather, sports from Brainerd and Baxter
How to Grow Ricinus | BBC Gardeners World Magazine
What Happens If I Eat Castor Beans? | Poison Control
Best to stay away from the castor bean - UF/IFAS Extension Charlotte County
Castor bean plant has 'wow' factor
Castor oil plant: planting, care & toxicity - Plantura