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Cover Crops for Vegetable Growers

Why cover crops?
Soil Health

Decision Tool

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Early summer
Mid and late summer
Late summer legumes
Early fall
Fall
Early spring

Cover crop information

Buckwheat

Annual ryegrass
Oats
Wheat (includes spelt, triticale)
Rye
Sudangrass
Reed Canarygrass

Arugula
Mustard, spring
Mustard, fall
Forage Radish
Forage Turnips

Red clover
Hairy Vetch
Field Peas
White Clover

Photos

Seed sources

White Clover Click to download printable PDF file

Dutch white clover is a slow-growing nitrogen-fixing perennial. Once established, it provides long-term cover, either alone or with a turfgrass such as LoGro. It is often used in high traffic area to minimize soil compaction and improve soil health. White clover tolerates wet conditions.

Land Preparation   
Use conventional tillage, maintain a firm seedbed.

Seeding Rate   
 Drill 5-9 lbs./acre
 Broadcast 7-14 lbs./acre 
After seeding roll the ground to improve seed to soil contact but not to break up soil aggregates.

Seeding date   
 Fall: August 15- Sept. 10, with fall cover or alone.
 Spring: As early as possible, may be frost seeded like medium red clover.

Seed source 
  
American Seed Co, Seedway. Specify Dutch white clover, which is a low-growing type used for cover crops.

Maintenance   
Used in high traffic areas, sometimes mixed with turf grass. Also used in areas for long term cover of walkways.
Mow close to the ground to prevent the plants from making seed and for aesthetics.

Control   
White clover propagates by seed or creeping stolons which root at the nodes.   Uproot and Incorporate to stop. This cover crop is difficult to control with herbicides. Glyphosate at 1 lb.ai/acre will suppress but not kill white clover. To eliminate white clover when it is used as a turf (and adjacent vegetables are out of the field) consult turf herbicide recommendations.

Tips   
Tolerates shade and can be used as a companion crop with alfalfa or perennial rye. Frost seed into winter cover crop in the spring. This crop is very tolerant of wet growing conditions. Legume cover crops are susceptible to root rot diseases such as Pythium and Rhizoctonia. Wait two years before planting a vegetable legume.