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Cover Crops for Vegetable Growers

Why cover crops?
Soil Health

Decision Tool

Newsletter articles

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

Medium red clover     Click to download printable PDF file

Medium red clover is a short lived perennial used to supply nitrogen. Unlike other legumes, it fixes a lot of nitrogen even in high-nitrogen soils. It has shade tolerance so it can be overseeded into small grains and incorporated in May of the following year. Since red clover seedlings tend to be slow growing it benefits from a nurse crop. It forms tap roots and is useful for remediation of compacted soils.

Land preparation
Medium red clover prefers cool weather conditions. This crop is well adapted a wide range of soil types and conditions. Medium red clover tolerates wet conditions better than vetch. It can be overseeded on small grains and if the soil is not crusted.
Medium red clover can be overseeded in vegetable crops with no additional preparation to the land.

Seeding rate
Drill or broadcast at 10 lb/ac. 

For a nurse crop, mix 2/3 annual ryegrass with 1/3 medium red clover, sow 20-25 lb/ac. After seeding roll the ground to improve seed-to-soil contact but not to break up soil aggregates.

Seeding date
February – March for frost seeded 
April – September 

Clover can be seeded with turf grass or small grains.

Seed sources
Local farm seed dealers, AgriCulver, Seedway, Lakeview Organic Grain. Good varieties of Medium red clover include Redland III, Cinnamon Plus, Bulldog. Do not substitute Mammoth red clover for cover crop use.

Maintenance 
Mow medium red clover during the summer of the first year .It can be seeded between established rows reducing soil compaction in well traveled areas. Good weed suppression. Control Blossoms by May, incorporate when flowering.

Tips

  • Red clovers support aphid predators such as Ladybeetles, green lacewing larvae and hoverfly larvae.
  • Purchase a good seed lot.
  • To use as a nurse crop, seed with annual rye in June-July, buckwheat in August and Oats in September.
  • Medium red clover is also discussed in the articles on late summer legumes and early spring cover crops.