Buckwheat is especially valuable for its release of phosphorus and also contributes a significant amount of organic matter. Very competitive with weeds, good for breaking up the soil. Can grow two crops in the North. Seed when ground is well warmed and after last Spring frost; it has no frost tolerance. Planted in June it grows waist high, blooming and ready to be plowed under in 35 days. Good to follow with Fall crops of rye and Austrian winter pea. Good bugs and bees love buckwheat! A good example is Lacewing adults that will feast on the nectar then deposit their “aphid lion” eggs on nearby garden crops. Just rake in some seed after harvesting an annual crop and buckwheat will keep out the weeds and look great doing it.