Grow peanuts in full sun, in loose soil that drains, and keep the soil moist while the flowers peg down. Peanut is Arachis, a warm-season annual, not a nut tree.
Give it full sun and loose soil that drains
| Factor | Recommended | Avoid |
|---|---|---|
| Light | Full sun, at least six hours | Do not grow it in shade, where plants stay thin and pegs stay few |
| Soil | Loose sandy loam so pegs can enter | Do not plant it in packed clay the pegs cannot pierce |
| Calcium | Work gypsum or lime into the top few inches if a soil test is low in calcium | Do not side-dress nitrogen in the row after planting |
| After pegs | Hand-pull weeds. Leave the soil under the branches alone once pegs have entered | Do not hoe under the plant after pegs bury |
| Season | Treat it as a tender annual. It needs a long, warm stretch | Do not count on the top surviving frost |
peanut wants an open, sunny bed and ground the pegs can enter. Packed clay is the usual reason pods stay empty. [1] Work calcium into the top few inches if a test is low, then leave the soil under the branches alone once the pegs have gone in. [2] Sow after frost once the soil is warm. Depth and spacing are on Planting Peanuts.
How much sun does a peanut plant need?
Full sun, at least six hours. Shade keeps the plants thin and the pegs few.
Do I cultivate after it flowers?
No. Hand-pull weeds. Hoeing under the branches after pegs enter cuts the stalks that form the pods.
Keep the soil moist while the flowers peg down
Yellow pea flowers open above ground. After they are pollinated, a peg — the flower stalk — grows down into the soil, and the pod fills there. Keep the surface loose and moist from bloom through pod fill so those pegs can enter. Water is the usual limit, especially while pegs go in and pods swell. [3] Give about 1 to 2 inches of water a week in that window, then ease off 10 days to two weeks before you dig so the soil will shake off the pods. [4] When to lift the plants is on Harvesting Peanuts.
How often do I water peanuts?
Keep the soil moist from bloom through pod fill, about 1 to 2 inches a week. Stop 10 days to two weeks before you dig.
Grow it in a wide pot that drains
A wide pot with a drainage hole can hold one plant on a patio if the mix stays loose. Pegs still need open surface, so a deep, narrow pot is a poor fit. This is a patio crop, not a houseplant in a dim room.
- Choose a wide pot with a hole in the bottom.
- Fill it with a loose potting mix, not packed garden clay.
- Set one plant per pot, and keep the pot in full sun.
- Water when the top of the mix starts to dry, and water more often while it flowers.
Can I grow peanuts in a pot?
Yes, in a wide pot with a drainage hole and loose mix, in full sun. A dim indoor windowsill is not enough.
Not a tree — and not a groundnut vine or peanut cactus
Peanuts do not grow on trees. Flowers open on a low annual bush, and the pods form underground after the pegs go in. A shop tag that says peanut tree is the wrong plant.
Groundnut sold as a climbing tuber crop is Apios. That vine makes a chain of tubers on a runner. See How to Grow Groundnut if that is the plant on your fence. Hog peanut has three leaflets and a one-seeded underground pod, not a crop of filled peanut hulls.
Peanut cactus is Echinopsis, a ribbed houseplant cactus. See How to Grow Echinopsis if that is the plant in the pot. Garden beans are Phaseolus — see How to Grow Beans if you bought a snap bean, not this annual.
Do peanuts grow on trees?
No. They grow on a low annual bush. Flowers open above ground, and the pods fill in the soil.
Is this the same as groundnut?
Not the vine. Groundnut is Apios, a climbing bean with a chain of tubers. Peanut is the annual that pegs pods into the soil.
Set it in full sun in loose soil, keep the bed moist while it flowers, and confirm the tag is not a tree or a climbing groundnut.
FAQ
Can I grow perennial peanut as a lawn?
That groundcover is a different Arachis, used as forage or a lawn, not this annual crop. The plant here is the edible peanut you sow each warm season.
Are peanuts a problem for people with a peanut allergy?
Yes. People with a peanut allergy should not handle the plants or the pods. Keep the harvest away from anyone who reacts to peanuts.
Related guides
Recommended plants
References
- [1] Iowa State University Extension -
https://yardandgarden.extension.iastate.edu/article/1997/5-2-1997/peanuts.html - [2] University of Arkansas Division of Agriculture -
https://www.uaex.uada.edu/publications/PDF/FSA-6093.pdf - [3] Clemson Home & Garden Information Center -
https://hgic.clemson.edu/factsheet/peanut/ - [4] Utah State University Extension -
https://extension.usu.edu/yardandgarden/research/peanuts-in-the-garden
This note is part of Arachis Guides.
More first-season notes by plant are gathered in How to Grow Guides.
Updated: Reviewed by Bosquelle Editors