We are nuts about peanuts! We “dig” their fresh homegrown taste; they are incredibly nutritious; they also have the nitrogen-fixing benefits of other legumes, so they’re also healthy for your soil! While mainly a southern crop, short-season peanuts can also be grown in the northern climates. Learn how to plant, grow, and harvest peanuts.
About the Peanut Plant
People are often surprised to learn that peanuts (Arachis hypogaea) are not nuts at all. Actually, they are legumes related to peas and beans. The peanut plant is unique because its flowers grow above ground, yet the “fruit” (peanuts) grow below ground.
Peanuts, which originated in South America, have a long growing season. Depending on the variety, between 100 and 140 frost-free days are required. Therefore, they tend to be grown in the southeastern U.S. (especially Georgia). Still, some peanut varieties (with shorter growing seasons) thrive as far north as southern Canada.
Peanut plants look like small bushes with yellow, pea-like flowers that self-pollinate. Once fertilized, the delicate petals fall away. Then flower stalks (“pegs”) grow longer and bend toward the earth, pushing the flower’s ovary or pistil into the soil one or two inches. While underground, the ovary at the tip of each stalk enlarges to form a peanut pod. Once all the peanut pods are mature, they are lifted out of the ground.