Answer: Radishes are an easy crop to grow, so you shouldn't have any trouble. Here are some general guidelines:
For spring growing, choose early season varieties. These are bred to mature quickly in cool spring temperatures. Radishes like a rich, loose, well-drained soil, preferably somewhat sandy. If your soil is heavy clay, lighten it by adding lots of organic matter like compost.
Sow seeds 1/4 to 1/2 inch deep and 1/2 to 1" apart. Once the seedlings are up, you can thin them to about 2 inches apart. Weed and water regularly. They have few pest problems, except maybe flea beetles. If you'd like, you can try covering the plants with a floating row cover to exclude these pests.
If you have good, rich soil, you probably don't need to fertilize. Otherwise, you can fertilize with a balanced, all-purpose water-soluble fertilizer every two weeks or so. Follow label directions.
Good luck on your project!
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