Can radishes grow year-round?
Written by
Kiana Okafor
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Radishes only grow year-round in certain conditions. Most radish varieties prefer cool seasons, such as spring and fall. Winter types withstand colder months. Your success is tied to selecting varieties that suit your local climate and implementing effective protection methods.
Spring/Fall Varieties
- Cherry Belle: Best in 50-65°F temperatures
- French Breakfast: Bolt-resistant for early/late seasons
- Avoid planting when temperatures exceed 70°F consistently
Winter Varieties
- Daikon: Withstands light frosts down to 20°F
- Watermelon Radish: Develops sweetness in cold soil
- Black Spanish: Stores well for winter use
Your USDA zone tells you what you can grow when. Zone 9-11 gardeners have 12 months of options a year, with protection. For colder zones, it requires season extension equipment. I have grown Daikon under row covers through December in zone 6, and even the roots sweetened up after light frosts.
Cultivating in the summer requires special attention. Use shade cloth if temperatures exceed 75°F. Water daily to prevent bolting. Select types that are heat-resistant, like White Icicle. However, keep in mind the roots can be spicier than the cooler seasons.
Utilize simple techniques to extend the productive seasons in your area. Cold frames will protect winter radishes if you are in USDA Plant Hardiness zones 3-8. Shade cloth can help summer crops grow in the warm parts of the growing season. Succession planting in increments of three weeks can provide continued harvests while the climate permits.
Year-round gardening is best in mild climates. Coastal California gardeners harvest radishes every month, while others adapt by utilizing microclimates and protection. It's better to concentrate on your local conditions than forcing any impractical seasons.
Read the full article: When to Plant Radishes: Expert Tips
