Cultivate the garden soil with a tiller or garden fork to a depth of at least 6 inches. Mix 4 inches of organic compost with the soil.
Broadcast 16-16-16 fertilizer granules over the growing site. Mix them into the turned soil with a garden fork. Apply the fertilizer at a rate of 1 lb. for every 100 square feet of planting space.
Create rows with a garden hoe for planting. Leave a space of 3 feet between each row.
Plant the runner peanut seeds 1 inch deep. Allow 8 inches of space between each seed.
Provide 1 to 2 inches of supplemental moisture each week, depending upon rainfall amounts.
Spreading 2 inches of mulch around each peanut plant when the seedlings are 2 to 3 inches tall minimizes weed growth and keeps the roots moist.
Repeat the application of 16-16-16 fertilizer approximately 30 days after planting.
Loosen the soil around the plants with a garden hoe every two weeks. Use shallow, grazing strokes and cultivate only the soil's top layer so that developing peanuts aren't damaged.
Dig and harvest runner peanuts using a spading fork when the foliage starts turning yellow. This occurs during late summer or early autumn.