Radish tops (the green leafy part) are a standard part of my RF tort's diet. I saw a grocery clerk once at my local store lopping off the greens on the radishes and throwing them away. I asked if I could have them. He said no problem. Now all the clerks save the radish tops for me at the store and I pick them up once a week free of charge. They even have a box in their storage area labelled with my name and "radish tops". After a year they all know me now. Another customer has a rabbit and she does the same things with the lettuce/cabbage leaves that get trimmed.