Question: how do you know when your radishes are ready to pick?
Answer: Spring Radishes - The fast-maturing, round radishes are ready for harvest in 3 to 4 weeks. You'll usually see the top portion of the radish poking up through the soil. When it appears to be almost an inch across, it is ready to pick. Radishes can be harvested by pulling or by gently loosening the surrounding soil.