Plant guide
Peanut.
Arachis hypogaea
Pronounced uh-RACK-iss hy-poh-JEE-uh
Also known as Earth Nut, Ground-Nut, Monkey Nut, Peanut, Pindar
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Peanuts are fascinating legumes that actually grow their pods underground after flowering. They love warm weather and plenty of sunshine to thrive. You will enjoy watching the yellow flowers bloom before the pegs push into the soil.
At a glance
- Care level
- Moderate
- Plant type
- Annual legume
- Light
- Full sun
- Indoor light
- Direct sun
- Water
- Every 3 to 7 days
- Mature size
- 1 to 2 feet
- Growth rate
- Fast
- Hardiness
- USDA 9 to 11
- Bloom time
- Mid to late summer
Care
Keep the soil consistently moist while the plant is flowering and setting pods. Watch for yellowing leaves which might suggest poor drainage or nutrient issues. Ensure the plant receives full sun for the best harvest.
- Watering
- Water deeply whenever the top inch of soil feels dry to the touch.
- Feeding
- Apply a low nitrogen fertilizer once a month during the active growing season.
- Pruning
- Pruning is generally not required for peanuts unless you need to remove dead or damaged foliage.
- Repotting
- Peanuts are annuals and are typically grown in the ground or large containers for a single season.
- Soil
- Sandy loam
- Soil pH
- 5.8 to 6.5
- Temperature
- 15 to 35°C
- Humidity
- 40 to 70%
Safety
- People
- The plant is generally non-toxic, but the seeds are a major allergen for many people.
- Children
- Peanuts are a significant choking hazard for small children.
- Contact allergens
- None notable.
- Airborne allergens
- Peanut dust can trigger allergic reactions in sensitive individuals.
- Edibility
- People with a peanut allergy must avoid peanuts in all forms, raw or roasted, and harvested peanuts must be properly cured to prevent mold growth.
How to identify it
- Yellow pea like flowers
- Compound leaves with four leaflets
- Low growing bushy habit
- Underground seed bearing pods
- Height
- 0.3 to 0.6m
- Spread
- 0.3 to 0.9m
- Leaves
- green, deciduous
- Flowers
- yellow, 1 to 2cm
- Fruit
- tan, Late summer to autumn
Problems to watch for
- AphidsCommon
- Leaf SpotCommon
- Pod BorerUncommon
- Root RotUncommon
- Sclerotinia RotUncommon
- Spider MitesUncommon
- Stem RotUncommon
- ThripsUncommon
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Growing it
- Propagation
- seed
- When to plant
- Spring
Plant them alongside heavy feeders to take advantage of the nitrogen they add to the soil.
Grows well with
Similar species
- Bambara groundnut · Another legume that produces its fruit underground.
Science
- Family
- Fabaceae
- Genus
- Arachis
- Order
- Fabales
- Class
- Magnoliopsida
- Native range
- South America
- Conservation
- Not of conservation concern as it is a widely cultivated crop.
It thrives in warm, sunny climates with well-drained soil and fixes nitrogen in the ground.
- Value to wildlife
- nectar source
- Pollinators
- bees
- Uses
- culinary, cover crop, oil production
Through the year
Ecological indicators
- Salinity
- 2/9
- Soil reaction
- 6/9
- Light
- 8/9
- Temperature
- 8/9
- Moisture
- 5/9
- Nutrients
- 4/9
Taxonomy resolved against GBIF.
Questions people ask
- Can I grow peanuts in a pot?
- Yes, they grow well in deep containers with loose, sandy soil.
- When do I harvest them?
- Harvest when the foliage begins to yellow and wither, usually from late summer to mid autumn and before the first frost.
Where the name comes from
The genus name Arachis comes from the Greek word for a weed, while the species name hypogaea means under the earth.
Good to know
- Peanuts are not actually nuts but legumes related to beans and lentils.
- The flowers self-pollinate above ground before the stem elongates to push the ovary into the soil.
- Peanuts were once used as a primary source of light in oil lamps.
- George Washington Carver promoted peanuts as a soil-improving crop for farmers.
Keep your peanut growing
This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.
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This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.
