There was a thread on this long ago, but I can't locate it. Anyway, I'm growing them this year, and they are busting out all over. About five feet tall, with flowers and pods everywhere. Two pieces of advice - (1) radishes are self-incompatible. That is, one plant can't pollinate itself. You need multiple plants. Fortunately, I have three. (2) Radish stalks are very fragile. They don't bend over and droop. They bend over and break. I have four foot cages around them, and I wish I had higher-up support. They need a lot. Next year.