This page gives instructions on how to buy cover crop seed from David's Garden Seeds.

Cover Crop Austrian Winter Peas Open Pollinated

Austrian Winter Peas are a winter cover crop in zones 6 and up. Hardy to 0°F. A great edible cover crop - snip off the tendrils and growing tips for salads! Flowers earlier (April) than hairy vetch.

For maximum nitrogen fixing, wait until at least 50% of the plants have flowered before mowing crop.

Latin Name: Fagopyrum esculentum

Ready to harvest in 60 days

Cover Crop Austrian Winter Peas Open Pollinated 1 Ounce Package



Sow Buckwheat any time between last spring frost and 1 month prior to first fall frost. A great quick summer crop, fast growing plants choke out weeds. Bees love the white flowers that appear in 4 to 5 weeks.

The tender stems are easy to cut down when the crop's done. For a fall/winter cover crop we recommend sowing buckwheat together with crimson clover. The buckwheat acts as a nurse crop for the crimson clover during the heat of the day. In the fall, the buckwheat is killed by frost. Organically grown.

Wait until grain heads form if you want the crop to re-seed itself. May also be used as a nutritious cereal grain or pancake flour. Young leaves may be added to salads. The deep root system of buckwheat is good at mining subsurface minerals and it is an excellent crop for utilizing the nutrients in rock powder fertilizers.

Latin Name: Fagopyrum esculentum

Ready to harvest in 30-45 days

Cover Crop Buckwheat Organic 1 Ounce Seeds


Crimson Clover

Buy Crimson Clover cover crop seeds as an upright, winter annual legume. Grows to 1-3' and sports striking crimson blossoms in quantity. Where winter is above -10°F (-23.3°C), it is sown in late summer, is dormant in winter, resumes growth in spring, and flowers in May.

Crimson clover fixes up to 200 pounds of nitrogen per acre, and prefers well-drained, loam soils with good organic matter content for best results. It is an excellent choice for under-seeding as it grows well in the shade of other crops. Easier to incorporate in the spring than Hairy Vetch.

Do not use for frost seeding as it won't handle the cold nearly as well as red clover. Crimson clover will not re-grow after close grazing or mowing once flowering has begun. Crimson clover does best in cool, humid weather and will perform poorly in the heat of summer.

Latin Name: Trifolium incarnatum

Blooms in 70-90 days

Cover Crop Crimson Clover Organic 1 Ounce Package


Fall Green Manure Mix

Fall Green Manure Mix is a versatile choice for late summer and fall planting. This ready-made mix is comprised of winter rye, field peas, ryegrass, crimson clover, and hairy vetch.

Vigorous late summer growth provides winter erosion control. The peas, clover, and ryegrass will winter kill to provide organic matter and soil cover.

The hairy vetch and winter rye will regrow in the spring to provide nutrients for crops to utilize.

Latin Name: Vicia villosa

Various Blooming Dates

Cover Crop Fall Green Manure Mix 1 Ounce Package


Hairy Vetch

Buy Hairy Vetch cover crop seeds for short-term, legume green manure for nitrogen fixation. Sow spring to late summer with or without grain, grass, or field peas. When sown late summer, spring regrowth is vigorous and nitrogen producing for tilling in before planting the spring garden crops.

Typical nitrogen produced is 110 lbs./acre. This rapid spring growth also makes it a good weed suppressant. Hairy vetch prefers well-drained soils with a Ph of 6.0-7.0, and will do poorly in clay or wet fields. It will do well in soils too acidic for many clovers and alfalfas.

May have some allopathic properties, so it is best to allow 2-3 weeks between incorporating and seeding of small-seeded crops. This selected hardy strain is widely adapted and withstands all but severe winters if sown in late summer or fall.

Latin Name: Vicia villosa

Blooms in 60-300 days

Cover Crop Hairy Vetch Organic 1 Ounce Package


Mammoth Red Clover

Mammoth Red Clover is the best clover for poor soils. Tall (2-3'), quick-growing clover. Sow in spring, summer or fall, alone or with grain/grass at 1/2 lb./1,000 sq.ft. (15-20 lb./acre). Will grow in more acid soil (pH 5.0-6.0) than other clovers if lime is applied at seeding time. Widely grown biennial used for Nitrogen addition and hay crops.

Large plant with big leaves makes it an ideal grazing crop. In addition to its uses for nitrogen fixation and as forage, the flowers of red clover may be used to garnish drinks, salads, soups, and desserts; the flavor is sweet and mild.

Red clover may be the best choice for frost seeding; it is extremely cold hardy and does well in most soils and growing conditions. it does, like most clovers, perform poorly in hot weather unless seeded into a crop canopy. Incorporate fully for best results.

Mammoth Red clover will fix up to 70-110 lbs. nitrogen per acre. The long tap roots loosen soils and mine phosphorus and other nutrients from deep in the soil. It should be seeded with 1.5-2 bushels/acre of oats to "nurse" the clover. Organically grown.

Latin Name: Trifolium pratense

Blooms in 70-90 days

Cover Crop Mammoth Red Clover Organic 1 Ounce Package


Mighty Mustard Pacific Gold

Fast growing control for nematodes and soil fungi.

Produces 4-5 tons of organic matter per acre. Mow before plants set seed and incorporate into the soil immediately to have the best effect on these soil pests.

With proper management, this crop may be used as an organic replacement for methyl bromide. Sow at 15-20 lb./acre. Blue label/Certified seed.

Latin Name: Trifolium pratense

Harvests in mid-late summer

Cover Crop Mighty Mustard Pacific Gold 1 Ounce Package


Rye Grass

A fast grower to provide "quick green grass" anywhere, and as a cover crop. Rye grass is a great nitrogen scavenger and can assimilate as much as 200 lb./acre/year of nitrogen. Most of that nitrogen then becomes available to subsequent crops, thus saving on fertilizer input.

Annual rye grass is a very competitive winter annual, with good seedling vigor, fast germination (with adequate moisture) and rapid establishment. Annual rye grass is a bunch grass, yellowish-green at the base, with long glossy green leaves up to 12 inches each. it will overwinter in certain years.

When used as a cover crop, annual rye grass is killed in the spring before it reaches seed formation stage. Sow from early spring through late summer. As winter cover, rye grass will winter kill, but still help protect the soil (see Oats). Sow, then rake to lightly cover.

Annual rye grass grows vigorously under a wide range of soils and climates. It is tolerant of wet soils and temporary flooding, and will grow in sandy soils, but is better adapted to heavy clay or silty soils. Annual rye grass tolerates a pH range of 5-8 with the optimum between 6 and 7. Can become a weed if allowed to set seed.

Latin Name: Secale cereale

Ready to harvest 1st August-15th November

Cover Crop Rye Grass 1 Ounce Package


Sweet Clover

Sweet Clover is a tremendous green manure and honey plant. Sweet clover can grow nearly anywhere, with as little as 16 inches of rainfall per year. It has deep tap roots that mine soil nutrients and water from deep within the soil. It is better than many of the other clovers for nutrient recycling and appears to have a greater capacity to extract potassium, phosphorus and other soil nutrients from insoluble minerals.

Sow in spring to summer at 1/2 lb./1,000 sq.ft. (15 lb./acre) as an annual, or let grow the next year over 6 ft. tall. Should be grown with 1½ to 2 bushels of oats as a "nurse" crop. Sweet clover is slow to establish the first year and may have some winter kill without adequate snow cover.

Second year growth is tremendous. Will fix as much nitrogen as alfalfa and doesn't require an acid soil. Can produce as much as 170 lb. of nitrogen per acre although 100 lb. per acre is closer to the average. Excellent conditioner for poor and thin soils. Mostly yellow with some white flowers. Organically grown.

Latin Name: Secale cereale

Ready to harvest in 70-90 days

Cover Crop Sweet Clover 1 Ounce Package


Winter Rye

Winter Rye cover crop is great for controlling erosion, adding organic matter, enhancing soil life, and suppressing weeds. Its extensive root system makes it among the best green manures for improving soil structure. It is an excellent soil renovator and pioneer crop for new fields.

Rye is very good at releasing phosphorus and potassium. It also stabilizes excess soil and manure nitrogen. Rye and vetch together are one of the preferred cover crops for no-till tomato planting. Rye is also good for animal grazing; it's highly palatable and of high nutritional quality, and comes back from grazing and grows again. Rapid establishment and growth together with weed suppression make rye an excellent choice for certified organic growers. Sow Aug. 1 first Nov. 15 as a winter cover crop. Organically grown.

Latin Name: Secale cereale

Sow August 1st thru November 15th as a Winter Cover Crop

Cover Crop Winter Rye Organic 1 Ounce Package


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Here at David’s Garden Seeds, gardening is our passion. We provide top quality non-GMO seeds so families can learn to garden and love it.  In turn, we hope they will pass this passion down to their children and grandchildren, teaching them to grow  delicious food, fresh herbs, and beautiful flowers.


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