Soil requirements
- Fresh, high-nitrogen fertilizer can push tops instead of roots. Compost-rich soil is enough.
- Daikon and other long types need more depth than round red radishes.
Watering
- Keep the top few inches evenly moist. Heat plus drought equals pithy roots.
Sunlight
Full sun in cool weather. Provide afternoon shade if you try a summer sowing.
Planting
- Sow every 7–10 days for a continuous harvest.
- Harvest on time. Extra days in the bed do not make them better.
Spacing
- 1–2 inches. Square-foot: 16 per square is the usual pattern.
Common problems
All leaves, tiny roots
Crowding, too much nitrogen, or heat. Thin and sow in cooler weather.
Flea beetles
Shot-holes in leaves. Row cover right after sowing helps.
Helpful tools
- Row cover optional
Product links will be added when independently researched. See the garden tools hub for buying criteria.
Frequently asked questions
Can radishes share a tomato bed?
Yes, as a quick spring edge crop. Pull them before tomato canopies close in.