Cover Crop - Alfalfa | Home & Garden
Cover cropping is an important part of soil and garden health. Every few years, say 2-3 years it's a good idea to let a garden plot rest from all the veggies you've been planting on it. Part of that rest period involves planting a cover crop in it that does several things. First of all it competes with weed seeds and helps keep them at bay. Second, if you plant a legume like alfalfa or cow peas the roots will actually add nitrogen, a valuable nutrient, BACK into the soil. Normally your veggies scarf up all the nitrogen they can find. Finally when it's time to replant your garden you can till in this cover crop and it will add organic matter to the soil. If you do this faithfully along with a healthy spreading of manure once a season you will never have to use chemical fertilizers!