Cover crops seeds are also known as green manure seeds, and include grasses, legumes, and a few varieties of flowers. These are planted to cover the soil surface. They help to minimize erosion and reduce weed growth in unused and overwintering garden beds. These seeds are planted with the intent to improve the soil, add organic matter, and keep the soil active during times when food crops are not being grown. Cover cropping is one of the foundations of organic growing that exploits existing natural processes to improve and enrich garden soil.