This virtual rainbow of colorful and tasty radishes includes purple, pink, red, white and gold radishes, all with crunchy white flesh. They are fast growing and ready to enjoy in well under a month from sowing. Add them for flavor and color to any green salad, enjoy for crispy snacks, or slice up for eye-catching appetizers with creamy dips. Tuck seeds into the garden in both early spring and fall, wherever you have room for a quick crop.