How to Grow Peanut
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Peanut
Arachis hypogaea
vegetablePeanuts are nitrogen-fixing legumes that produce edible seeds in underground pods. The plant has distinctive yellow flowers that develop into elongated pods buried in the soil after the flower stem elongates downward. They are warm-season annuals requiring a long growing season and well-draining soil.
When should you plant Peanut in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Peanut timeline · Pittsburgh, PA (Zone 6b)
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Plant Peanut
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Peanut
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Peanut dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 8b-10, with extended seasons achievable in zone 8a with careful timing
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Germination & Emergence
1-2 weeksSeeds germinate underground; seedlings emerge with cotyledons above soil within 7-10 days
Keep soil warm (70-80°F minimum) and consistently moist. Plant only after soil temperature reaches 65°F. Thin seedlings to proper spacing.
Flowering & Pegging
4-6 weeksYellow self-pollinating flowers appear at leaf axils; after pollination, flower stems elongate and push developing pods into soil (pegging)
This is the critical stage for pod development. Ensure soil moisture is consistent and soil remains loose for pod penetration. Hill soil around plant base gently. Apply gypsum if not already done.
Pod Development
4-8 weeksUnderground pods expand and fill with developing seeds; plant continues photosynthesis above ground
Maintain steady watering but avoid waterlogging. Gentle cultivation to keep soil loose. Monitor for fungal diseases in humid conditions.
Maturity & Harvest
2-3 weeks before harvestFoliage yellows and wilts; pods mature underground with fully developed seeds inside
Reduce watering 2-3 weeks before harvest. Dig carefully to avoid splitting pods. Cure pods properly before storage.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick, use Bt spray, encourage beneficial insects, monitor with pheromone traps
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Spray with neem oil or insecticidal soap, increase humidity, prune affected foliage
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Remove affected leaves, improve air circulation, apply fungicide if severe, avoid overhead watering
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Ensure good drainage, cure pods properly, store in cool dry conditions, avoid stress
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Plant resistant varieties if available, crop rotation, solarize soil before planting
Uses
Roasted snack and cooking oil
CulinaryPeanuts are eaten roasted as a snack, used to make peanut butter, and pressed into high-quality cooking oil valued for its mild flavor and high smoke point. [source]
Asian cuisine staple
CulinaryGround peanuts form the base of satay sauce, curries, and noodle dishes throughout Southeast Asia, adding protein and rich flavor. [source]
Nutritional powerhouse
MedicinalRich in resveratrol, vitamin E, and magnesium, peanuts have been studied for cardiovascular and antioxidant benefits when consumed in moderation. [source]
Nitrogen fixation and soil improvement
HouseholdAs a legume, peanuts form symbiotic relationships with nitrogen-fixing bacteria, enriching soil for subsequent crops and reducing fertilizer needs. [source]
Wildlife food source
WildlifePeanuts provide nutrition for various wildlife species and can be grown to support local ecosystems in temperate gardens. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when foliage yellows (120-150 days after planting). Loosen soil carefully with a fork and gently pull the entire plant, keeping pods attached. Shake off soil and invert plants to air-dry for 2-3 days. Remove pods from stems. Cure pods in a warm, well-ventilated area (80-90°F) for 2-3 weeks until the kernel inside snaps rather than bends. Store in cool, dry conditions.
Fun Facts
- 🌱 Peanuts are not tree nuts but legumes related to beans and peas; the pod develops underground after the flower stem bends down (a phenomenon called 'geocarpy')
- 🌱 A single peanut plant can produce 25-40 pods, and it takes about 540 peanuts to make a 12-ounce jar of peanut butter
- 🌱 Peanuts require a minimum of 120 frost-free days and are one of the few crops where the fruit develops underground, making them unique among cultivated plants
Gardening Terms
New to gardening? Learn about terms used in this guide:
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