I proposed a similar question in the vegetable forum and thought possibly I could find some help here as well. I have been experimenting with growing fresh salad foods indoors this winter and would like to figure out a way to grow radishes indoors. Problem number one is spacing. I have a three tiered PVC plant stand which works nicely for potted lettuce, spinach, as well as several herbs on the bottom shelf. The upper two shelves each have room for four standard seed trays which might work as planting trays. I have also considered using the Costco roasted chicken clear plastic domes which also work nicely for onion seed starting. These domes are probably a better fit depth wise and I can place two domes in a seed tray. The problem seems to be the ability to harvest a decent crop without devoting a huge amount of space to the process. I thought about close cropping in these covers which could supply up to a week’s worth of radishes, making successive plantings weekly. Any thoughts on the subject would be appreciated.