Peanut

A legume that flowers above ground and ripens its pods below it: plant in warm sandy soil, let it peg down, and dig a protein-rich crop that fixes its own nitrogen.

Direct sow raw peanuts in their skins into warm, loose, sandy soil after frost; inoculate in new ground and skip nitrogen.

Peanuts are direct-sown — they don't transplant well — using raw, unroasted seed still in the papery red skin (shelled or in-shell). Wait until the soil is warm (65°F, usually 1-3 weeks after last frost), then plant 1-2 inches deep and 6-12 inches apart depending on type (bunch types closer, spreading runners wider), in full sun. Loose, sandy, well-drained soil is important: the pegs need to push into it later, and heavy clay makes both pegging and harvest hard.

Because peanut is a legume, don't feed it nitrogen — it fixes its own from the air. In ground that hasn't grown peanuts before, coat the seed with a peanut/cowpea rhizobia inoculant so it can. A little phosphorus and potassium, and calcium (gypsum) for good kernel fill, is all the feeding it wants. Then keep the soil loose and weed-free, especially as flowering approaches.

Keep soil loose and moist for pegging, stop disturbing it once flowers appear, and let the plant fix its own nitrogen.

Peanut care revolves around one unusual event: pegging. After the small yellow flowers self-pollinate low on the plant, each fertilized stalk elongates downward and pushes into the soil to form a pod underground. Your job is to make that easy — keep the top few inches of soil loose, friable, and evenly moist so the pegs can enter, and gently hill loose soil around the plant base. Once flowering starts, stop deep hoeing and weeding near the plants, which would snap the descending pegs.

Otherwise peanuts are low-maintenance and drought-tolerant, but yield much better with steady moisture through flowering and pod fill. Skip nitrogen fertilizer entirely (it grows tops at the pods' expense), water consistently, and ease off in the final couple of weeks so the plants dry down for harvest. Watch for leaf spot in humid weather, since heavy defoliation weakens the pegs and can cost you pods.

Dig the whole plant when leaves yellow and pods are filled, then cure it like garlic - dry on the plant, then dry the pods.

Because the crop is invisible underground, judging harvest takes a test dig: peanuts are ready when the foliage yellows (around 120-150 days) and lifted pods show plump kernels with well-colored skins and a darkened, veined inner shell. Harvest before a hard frost, which damages the pods. On a dry day, fork under the plant to loosen the soil, then pull the entire plant — pods and all — and shake off the dirt. Sift the loosened soil for any pods that detached.

Then cure, essentially the same way you'd cure garlic. First, hang or rack the whole plants (pods still attached) in a warm, dry, airy, shaded place for one to two weeks to dry down. Then strip the pods off and cure them another week or two until the shells are papery and the kernels rattle inside. Thorough drying isn't just for storage — it prevents the Aspergillus mold that produces toxic aflatoxin, so don't rush it or store damp peanuts.

Fully dried, peanuts keep for months in the shell in a cool dry place, or far longer refrigerated or frozen; dampness means mold.

Once properly cured and fully dry, peanuts store well. Keep them in the shell in a breathable container somewhere cool and dry, where they hold for a few months; shelled kernels go rancid faster because of their oil, so shell only what you'll use soon. For longer storage, the fridge (about 6 months) or freezer (a year or more) keeps the oils from turning — peanuts freeze excellently, shelled or not.

The one serious rule is moisture: damp or poorly dried peanuts can grow Aspergillus mold, which produces aflatoxin, a genuine toxin. Discard any peanuts that smell rancid or musty, look moldy, or feel soft. Beyond fresh eating, home-grown peanuts roast (dry or in-shell), boil green (freshly dug Valencia types make classic Southern boiled peanuts), press into peanut butter, or render oil — and the plants make good compost and forage.

A long-warm-season Southern crop: hot zones grow any type; cool-summer gardens must force short-season Spanish and Valencia types.

Zones 3-4: honestly, no — peanut wants 120+ warm days and soil that holds 65°F, and a zone 3-4 garden has only about 105-120 frost-free days, so even a 90-day Valencia runs out of season once you subtract the wait for warm ground. There is no planting window here for that reason; a movable container in the warmest spot you have is the only realistic experiment. Zone 5: marginal but possible — use the fastest Spanish or Valencia types (90-110 days), warm the soil with black plastic, sow only once the ground is truly warm, and expect a modest novelty crop. Zones 6-7: workable with early and mid types; a warm summer will finish them. Zones 8-9: peanut country — the long, hot season easily ripens big Virginia and Runner types, and the sandy soils of the Southeast are ideal for pegging. Zones 10-13: excellent given loose soil; the heat is no obstacle and you can plant across a wide window. Everywhere, the two non-negotiables are heat and loose, sandy soil for the pegs to enter.

No pods but healthy tops means pegs couldn't enter the soil (or too much nitrogen); yellow leaves may mean missing inoculant.

Lush plants but few or no pods: pegs couldn't penetrate hard, dry, or crusted soil — keep the ground loose and moist during pegging; or too much nitrogen grew tops at the pods' expense. Yellow, weak plants in new ground: no nitrogen-fixing rhizobia present — inoculate the seed next time (or side-dress lightly this once). Small dark spots spreading on leaves, heavy leaf drop (leaf spot): the main peanut disease — space for airflow, water at the base, rotate, and remove debris. White fungal mat and sudden wilt at the stem base (southern blight): remove affected plants, improve drainage, rotate away from susceptible crops. Empty or 'pops' (unfilled shells): calcium shortage during pod fill — add gypsum; also poor pollination in extreme heat. Pods rot or mold after harvest: insufficient curing — dry longer and store only bone-dry nuts.

A protein and healthy-fat powerhouse rich in niacin, folate, vitamin E, and resveratrol - dense, satisfying, and nutritious.

Peanuts are among the most nutrient- and energy-dense foods you can grow: about a quarter protein by weight, with plenty of heart-healthy monounsaturated fat, plus standout amounts of niacin, folate, vitamin E, magnesium, phosphorus, and manganese. They even contain resveratrol, the antioxidant famous from red wine. As a legume, peanut protein complements grains, which is the nutritional logic behind pairings like peanuts and rice across many cuisines.

Two honest notes. First, the allergy: peanut is one of the most significant food allergens, and reactions can be severe — a real consideration for anyone growing, handling, or sharing them. Second, the calories: peanuts are dense (roughly 160 calories per ounce), so they're satisfying and sustaining but easy to overeat. For the vast majority, though, they're an excellent, affordable, storable source of plant protein and good fats — and few crops give more nutrition per square foot.

Roast, boil green, or grind into butter - and reach for the whole world of peanut cooking, from satay to groundnut stew.

Fresh-grown peanuts open up preparations you can't buy. Roasting (dry in a 350°F oven, or in the shell) deepens their flavor for snacking and butter. Boiling is the Southern revelation: freshly dug 'green' (undried) Valencia peanuts simmered in heavily salted water for hours become soft, briny, and addictive — boiled peanuts, a roadside classic. And homemade peanut butter is simply roasted peanuts blitzed with a little salt, worlds better than the jar.

Peanuts anchor cuisines worldwide: Thai and Indonesian satay sauce and gado-gado, West African groundnut (maafe) stew, Chinese kung pao, Southern peanut brittle and pie, and countless sauces where their richness thickens and rounds a dish. Use raw kernels where you'll cook them into a sauce, roasted where you want crunch and toastiness. The oil is prized for high-heat frying. Whatever the dish, home-grown, freshly cured peanuts taste noticeably richer than store-bought.

Every peanut is a seed: save your best fully-cured raw kernels in their skins and replant them next spring.

Seed-saving peanuts couldn't be simpler in principle: the peanut is the seed. Set aside a portion of your best, fully mature, well-cured pods from your healthiest plants, keep them raw and unshelled in a cool, dry place over winter, and shell them just before planting next spring, sowing the kernels in their papery red skins. Choose plump, well-filled pods for the strongest seed. Peanut seed stays viable only 1-2 years, so save fresh each season.

Two keys to success: never use roasted or salted peanuts (heat kills the germ), and in ground that hasn't grown peanuts, treat the seed with a legume inoculant (peanut/cowpea group rhizobia) so the plants can fix nitrogen. Because peanuts are self-pollinating, saved seed comes true to type with no isolation needed — one season's crop reliably funds the next, and a handful of pods replants a whole row.

Not an herbal medicine, but a genuinely functional food - and the source of George Washington Carver's agricultural revolution.

This section records how people have traditionally used this plant, and what is known about the risks. It is history and general information — not medical advice, and not a recommendation to treat anything. Plants are not dosed like medicines, some interact with prescriptions, and some are harmful in ways that are not obvious. Talk to a clinician before using any plant medicinally.

Peanuts have little standing as herbal medicine, but they're a meaningful functional food: their protein, healthy fats, niacin, folate, vitamin E, magnesium, and resveratrol make regular moderate peanut eating part of well-studied heart-healthy dietary patterns, and peanut-based therapeutic foods (like the paste RUTF) are a frontline treatment for severe childhood malnutrition worldwide. As a nutrient-dense, shelf-stable, affordable protein, the peanut does real public-health work.

The honest cautions are the flip side of that density: the peanut allergy is serious and, for some, life-threatening, and improperly stored peanuts can harbor aflatoxin. Historically, the peanut's greatest 'medicine' was agricultural — George Washington Carver promoted it across the depleted cotton South precisely because, as a nitrogen-fixing legume, it rebuilt worn-out soils while feeding people. Treat peanuts as excellent, protein-rich food (minding allergies and dryness), not as a remedy.

Domesticated in South America, spread worldwide by trade, and transformed by George Washington Carver into a Southern soil-saving staple.

The peanut was domesticated in South America — the lowlands of Bolivia, Argentina, Paraguay, and Brazil — thousands of years ago, and ancient Andean cultures prized it enough to bury peanuts with their dead and depict them in pottery. Spanish and Portuguese traders carried it across the globe after 1500, and it took especially deep root in West Africa and Asia. It returned to North America largely through the transatlantic slave trade, and the names 'goober' and 'pindar' come from the Kikongo and Kimbundu languages of Central Africa.

For a long time peanuts were considered poor people's food and livestock feed in the United States. That changed with George Washington Carver, who in the early 1900s championed peanuts as a nitrogen-fixing rotation crop to restore Southern soils exhausted by cotton, and developed hundreds of uses to build demand. His work helped make the peanut a major American crop — a story of a humble legume that quietly rebuilds soil and feeds people, from ancient Peru to the modern PB&J.