Peanut

A peanut is a plant with a secret life underground. It flowers above the soil like most legumes, but after pollination the flower stalk bends down and pushes a structure called a peg into the ground. The peg burrows several inches deep, and only then does the peanut form. If the soil is compacted, if it has too much clay, or if the surface crusts over, the pegs cannot penetrate and the plant produces nothing. This is why peanuts grown in heavy garden soil tend to disappoint — the plant looks healthy, flowers abundantly, and yields a handful of malformed nuts at best.

Sandy loam is what peanuts want. Loose enough that a peg can push through without resistance, but with enough organic matter to hold moisture during the long hot season the plant needs to mature. If your native soil is clay-heavy, a raised bed filled with a mix of compost and coarse sand can work, but even then the crop remains marginal in climates where the frost-free season is shorter than 130 days. Peanuts are a Southern crop for a reason.

Sow raw, unroasted peanuts two weeks after your last frost date, once the soil has warmed to at least 65 degrees. Plant them about two inches deep and a foot apart. The plants are low and bushy, and they tend to sprawl as they mature. Some gardeners hill soil up around the base of the plants once flowering starts, reasoning that it gives the pegs less distance to travel, but the evidence that it increases yield is mixed. What does matter is keeping the soil surface loose — never let it crust.

Water consistently through the growing season, especially during flowering and peg formation, but cut back on water about three weeks before you plan to dig. Dry soil makes harvest easier and tends to result in better-flavored nuts. When the leaves start to yellow in late summer or early fall, dig a test plant. If the inner shell shows dark veining and the kernels fill the shell, the crop is ready. Dig the whole plant, shake off the soil, and hang it upside down in a warm, dry place for two to three weeks to cure. Peanuts eaten fresh from the ground taste flat and starchy — they need that curing period to develop their characteristic flavor.

The peanuts you dig are not the roasted ones you buy in a jar. Fresh-cured peanuts are most often boiled in salted water for an hour or more, which gives them a soft, bean-like texture and a flavor closer to edamame than to a cocktail peanut. If you want roasted peanuts, shell the cured nuts and roast them in a 350-degree oven for 15 to 20 minutes, stirring every few minutes. The difference in flavor between a home-roasted peanut and a store-bought one is noticeable — richer, less oily, and without the chemical aftertaste of commercial processing.