I've heard buckwheat is very easy to grow, and it only takes 12 weeks to reach maturity. I read that to harvest, you simply cut it down with garden sheers, and then get a sheet and a broom, and you beat the beejebers out of the buckwheat. Ripe ones fall into the sheet, immature ones stay on the plant. I'm considering growing buckwheat one of these years (probably next year). I have 1/3 acre and lots of room to do it, so why not?