I am reading the chapter on green manures. I have a weedy place where I wanted to put a garden this fall. So I thought I might sow some buckwheat there and hope that the soil would be ready to plant maybe in september or october. But after reading the Green Manures chapter, there are a number of summer green manures that I will have to explore.
On beyond buckwheat! Mustard, sunhemp (Crotalaria), sesbania, chenapodium, fenugreek, lab lab, velvet bean, jack bean, hemp, and tobacco (well maybe not tobacco).
