Peanut (Arachis hypogaea)
Virginia
About this plant
The peanut plant is a low-growing legume known for producing edible nuts underground. It has yellow flowers that self-pollinate, and after flowering, the plant sends pegs into the soil where peanuts develop. Peanuts are widely used as food and oil sources worldwide.
Taxonomy
Higher classification: Fabales
Origin & Distribution
- Native region
- South America
- Distribution
- Cultivated globally in warm climates, especially in Asia, Africa, and the Americas.
Care
- Suitable locations
- Outdoor, Greenhouse
- Preferred window facing
- South-facing, West-facing
- USDA hardiness zones
- 8-11
- Soil pH
- 6.0-6.5
- Soil type
- well-draining sandy loam
Watering. Water regularly to keep soil moist but not waterlogged. Reduce watering as pods mature to prevent rot.
Fertilizing. Peanuts fix their own nitrogen but benefit from phosphorus and potassium fertilizers. Apply balanced fertilizer before planting and side-dress during growth if needed.
Peanut plants are fairly easy to grow but need warm temperatures and plenty of sunlight. They prefer well-drained soil and moderate watering. Overwatering or poor drainage can cause root problems. Regular care includes ensuring enough space for the underground pods to develop.
Propagation
- Propagation methods
- Seeds
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Yellow flowers and bushy green foliage; the unique underground peanut pods are the main feature.
Toxicity & Safety
Peanut plants are generally safe but can cause allergic reactions in sensitive individuals. Keep away from those with peanut allergies.
Allergy information
Peanut plants can cause allergic reactions in people sensitive to peanuts. The main trigger is the peanut itself, especially the nuts and sometimes the plant's pollen. Symptoms may include itching, swelling, or more severe reactions. To reduce exposure, avoid contact with peanuts and wash hands after handling the plant.
Common problems
Common problems include fungal diseases if soil is too wet, pests like aphids, and poor pod development if soil is compacted or too dry.
Uses
Grown mainly for edible peanuts used in cooking, snacks, and oil production. Also used as a cover crop to improve soil nitrogen.
Notes
Peanuts develop underground, so loose, sandy soil is best. Avoid heavy clay soils. Harvest when leaves start to yellow. Crop rotation helps prevent soil diseases.