These are the radishes I planted. I put drainage stones on the bottom. Than potting soil mixed with compost. The top 2 inches are seedlings soil. Then I put the seeds in (which are really small) and covered with a sprinkling of soil. I watered, then covered the top with Saran Wrap except for a corner where I put a grow light. Yeah, after 4-5 days I have a spout! Waiting for the rest.
