My pleasure, thanks for stopping by!
I'll have to find out how possible the 216 plants per bed is... that's 9 plants per square foot, giving each onion a 4" square to grow in. It waa supposed to be possible to grow them in 3" squares, which is 16 plants per square foot, but I haven't had good luck growing onions that close. It does work good for radishes, and I hope to try it with carrots.