Red Clover as a Cover Crop
Legume cover crop
Red clover (Trifolium pratense) is a short-lived perennial legume widely used as a cover crop across much of the United States. In gardens and on small farms it is valued as a soil-building crop that fits well into rotations, understory plantings, and pathways. It is one of the more forgiving legumes to establish, which makes it a common starting point for growers new to cover cropping.
Benefits
As a legume, red clover works with soil bacteria to fix nitrogen from the air, adding it to the soil for the crops that follow. Its deep taproot and fibrous roots help improve soil structure, break up compaction, and add organic matter as the roots and top growth break down. A dense stand shades the ground, which suppresses many weeds and reduces soil erosion from wind and rain. Over a full season it can contribute a meaningful amount of biomass that feeds soil life.
When to plant
Red clover is most often planted in early spring or in late summer to early fall, depending on your region and how it fits your rotation. It is also frequently frost-seeded onto small grains or broadcast over bare ground in late winter, when freeze and thaw cycles work the seed into the soil. Seed is small, so it is usually broadcast or drilled shallowly at a light general rate; your local Cooperative Extension can suggest a seeding range and timing suited to your area.
Growing it
Red clover germinates readily and grows into a leafy, mounded stand, then sends up flower stalks in its second year if left in place. It prefers moderate moisture and does best on well-drained soils with a near-neutral pH, though it tolerates a range of conditions. Inoculating the seed with the appropriate clover-type bacteria at planting helps ensure good nitrogen fixation, especially in ground that has not grown clover before.
Ending the cover crop
Because red clover is not reliably winter-hardy in the coldest regions, a hard winter will often kill it, leaving a residue that is easy to work in the spring. Where it survives, you can end the stand by mowing or string-trimming it close and then turning the top growth and roots into the soil with a spade, fork, or tiller. Cutting or crimping when the plants are in early bloom, before seed sets, reduces the chance of unwanted reseeding. Allow a few weeks for the residue to break down before planting the following crop.
Best for
Red clover suits gardeners and small-scale growers who want a nitrogen-building cover that is easy to establish and works in mixes, rotations, or as a living pathway. It is a good fit for those who can leave ground in cover for a full season or overwinter, and who want a forgiving legume rather than a specialized one. Check with your local Cooperative Extension to confirm it matches your soil, climate, and goals.
General guidance for US growers. Seeding rates and regional mixes vary; your local Cooperative Extension office and NRCS can help you plan. Page updated Aug 4, 2026.