Green manures are crops grown to improve the soil condition and nutrition. They can help crowd out the weeds you don’t want, and some even get rid of soil diseases. Instead of being harvested, the crop is dug into the soil while still lush and green, when it has a high nitrogen and moisture content, and provides an ideal food source for soil microbes, worms and other soil creatures. The microbes decompose the green manure quite quickly, which releases organic matter and nutrients into the soil where the trees can use them.
Read article in Autumn – Week 6