Cover crops

Vetches, clovers, peas, and beans are good cover crops for our yard

Certain brassicas are gaining popularity as cover crops -- radishes, mustard, and rapeseed. Biofumigation characteristics -- or their ability to reduce disease, weed and nematode pressure in subsequent crops; also do a really good job of breaking up compacted soils, increasing water permeability
We planted hairy vetch in fall 2008 -- should be planted right after summer crop is harvested; tilled under in early spring when the plants begin to flower. Turned-under green manure should be allowed to break down and mellow for a few weeks prior to planting the main summer crop.

Orchard - plant cover crop that includes perennial plants and self-seeding annual to provide living mulch. This feeds and protects the trees while providing an excellent habitat for beneficial insects and reducing weed pressure. White clover is good; include flowering plants like yarrow or tansy.