Answer: You're right, it doesn't take a rocket scientist to grow radishes, but, like any other plant, radishes have their preferences. Radishes have shallow root systems so maintain high moisture levels with good fertility by mixing compost into the top 2"-3" of soil and watering frequently. Under dry or crowded conditions the roots will be hot or pithy.
Timing is also important: Sow seeds in spring or late summer so that the radishes mature when days are shorter, sunlight weaker, and temperatures lower.
Sow seeds 1/2" deep and 1/2" apart in rows at least 8" apart. Seedlings will appear in 4-11 days. Optimum soil temperature for germination is 45F - 85F. As soon as seedlings appear thin to 1" - 1 1/2" apart.
Hope the above guidelines will help you grow tasty radishes!
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