Plant Care Castor Bean

Castor Bean

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

💦 Water

How often to water your Castor Bean

Water needs for Castor Bean
0.5 cups
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.

Calculate water needs of Castor Bean

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Castor Bean in your home

Light needs and placement for plant Castor Bean: 1ft from a window
1ft or less from
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 🏡.

🪴 Nutrients

How to fertilize Castor Bean

Nutrient, fertilizer, and repotting needs for Castor Bean: repot after 2X growth

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.

💡 FAQs
⭐ Difficulty Level

Castor Bean is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Benefits of Growing Castor Bean →

Common Castor Bean Problems →


💦 Water Needs

Castor Bean prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Castor Bean Water Frequency →

Castor Bean Root Rot →


☀️ Sunlight Needs

Castor Bean requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Castor Bean Light Requirements →

Castor Bean Direct Sunlight Needs & Tolerance →


🐶 🐈 👶 Toxicity

Castor Bean is extremely dangerous if consumed. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian immediately. Castor Bean is not recommended for homes with children, cats, or dogs.

Castor Bean Toxicity to Cats →

Castor Bean Toxicity to Dogs →

Castor Bean Toxicity to Humans →


🌦️ Growing Outdoors

USDA Hardiness Zone
Castor Bean can be grown outdoors in USDA Hardiness Zones 9a-11b. Find your local hardiness zone here.

Castor Bean Temperature Tolerance →


🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.


Care Summary for Castor Bean

Castor Bean

Castor Bean


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

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

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