I planted buckwheat this year. Deer will eat it, but not decimate it. It's thick canopy can suppress weeds and it adds phosphorous back into the soil and you can get 2-3 crops out of it. I plan,after it heads out, to drag over it and lay it down. This will disperse the free seed and here we go again. I used a drag over my rye and layed it down over my buckwheat, instead of cutting it. Looks really good.