Jack Bean Plant Care
Canavalia ensiformis (L.) DC.
Updated · Sources · How we source care data
Canavalia ensiformis is a legume which is used for animal fodder and human nutrition, especially in Brazil where it is called feijão-de-porco. It is also the source of concanavalin A.
Every 7–10 days
Full sun to partial shade
65–85°F
40–70%
At a glance
How do you care for Jack Bean?
Water Jack Bean every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 65–85°F (18–29°C) and 40–70% humidity. Fertilize it every 4 months during the growing season.
What Is the Jack Bean?
Jack Bean (Canavalia ensiformis) belongs to the Fabaceae family within the Canavalia genus. Jack Bean is also known as Sword Bean, Horse Bean.
Jack Bean displays a vining, climbing growth habit, reaching up to 6 ft tall with a spread of approximately 3 ft. Jack Bean produces showy clusters of purple, pink, or white pea-like flowers.
Leaf size: approximately 6 inches.
How Often Should You Water a Jack Bean?
Canavalia ensiformis requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Jack Bean Need?
Jack Bean thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Jack Bean Prefer?
Canavalia ensiformis grows best at temperatures of 65–85°F. Jack Bean prefers humidity levels of 40–70%.
Temperature
65–85°F
Humidity
40–70%
What Soil Mix Works Best for a Jack Bean?
Well-draining sandy loam with added organic matter. Good drainage is essential for Jack Bean to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Jack Bean?
Feed Jack Bean every 4 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 4 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Jack Bean?
Repot every 1-2 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Jack Bean?
Jack Bean can be propagated through seeds. Similar propagation techniques also apply to molokai jackbean plant care, which shares the same genus.
Is the Jack Bean Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Jack Bean, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Jack Bean?
Jack Bean is susceptible to aphids, spider mites, whiteflies. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Jack Bean Need?
Jack Bean grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. In cooler regions, grow Jack Bean as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13b
Keep exploring plants
Jack Bean is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Canavalia genus — compare its care with other Canavalia species on PlantoScan.
Canavalia is part of the Fabaceae plant family — browse all Fabaceae genera and species.
Jack Bean thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Canavalia ensiformis (L.) DC., family Fabaceae (first published in Prodr. 2: 404 (1825)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Jack Bean, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13b, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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