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About Castor Bean
Castor Bean is a cultivated, annual herbaceous ornamental with low drought tolerance. If broken seeds are ingested, it is likely to cause death in humans, livestock, and pets.
Taxonomy
Ricinus communis
Ricinus
Euphorbiaceae
Malpighiales
Also known as
Castor oil plant, Ricinus and Ricininae

How to care for Castor Bean
How often to water your Castor Bean

every 9
Castor Bean needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
9
Finding light for Castor Bean in your home

a window
Castor Bean love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Castor Bean does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Castor Bean in your home 🏡.
How to fertilize Castor Bean

Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Castor Bean after it doubles in size or once a year—whichever comes first.
Care Summary for Castor Bean
Castor Bean
Greg recommends:

0.5 cups every 9 days

< 1ft from a window

Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.
