You need: 1 pack of radish seeds, some small plot of land or a pot of potting soil, water and tender loving care.
Prepare your soil. Dig it up a few times and mix in some organic matter such as compost or an organic mix-in available at a plant nursery or Home Depot. Either plant your seeds 3 inches apart or be sure to pull out seedlings that are too close together when they germinate. Put some compost on top of the germinated seedling about a week or two after germinating. Watch until a red ball appears in the ground, and then pull out your pretty red radish. Photograph the radish for Mary’s Ruby Tuesday meme.
Learn how to make delicious pickled radishes (made with umeboshi paste).