Kohlrabi choices for the Iowa climate
What varieties of kohlrabi have Iowa gardeners had luck in growing? I grew some several years back but, as I recall,they weren't that great. My wife recently picked a few up at a farmers market which we really liked, but she didn't think to ask about the variety. I'd be curious to know the names of the varieties Iowa gardeners have had success with, and how heritage varieties complete with hybrids and with the larger 8-10" bulbs that are grown. I live in SE Iowa.