Keeping your gardens covered with green manure crops is an excellent way to keep your soil healthy in between growing seasons, as it helps to control the weeds and protects the soil. Sun and heavy rains can compact the soil and leach out beneficial nutrients. When green manure crops are dug in to the garden, they add organic matter, nitrogen, and minerals that are brought up by the roots.
When choosing the best type of cover crop for your situation, you need to consider your climate, soil type, the duration needed and whether you want a nitrogen-fixing crop or a crop that produces a lot of organic matter to dig back into the soil.
Next: Which crop to choose?
Image: Benketaro (Flickr)