When to Plant Fall Radishes: Fast Crops Before Frost
Fall radishes mature in 3 to 5 weeks. Sow late summer into early fall until a few weeks before frost. Harvest at 1 inch. Heat makes them pithy.
Published by ThriveThyme
radishes fall planting harvest
When to Plant Fall Radishes
Sow fall radishes in late summer into early fall. They mature in 3 to 5 weeks, so you can seed until a few weeks before frost. Fall is often better than summer. Hot weather makes roots pithy. Use My Garden frost settings or a zone fall calendar such as zone 6 fall, zone 7 fall, or zone 8 fall.
See the radish plant page.
Dates by Zone
These are typical windows. Confirm with frost settings.
- Colder zones: Late summer into early fall, while a few weeks remain before frost.
- Zones 7 to 8: Late summer through early fall.
- Warmer zones: Keep sowing while nights are cool and frost is a few weeks away.
When to Harvest
Pull when roots are about 1 inch across. Do not wait for them to size like beets. Heat and delay make them pithy.
Next Steps
Sow a short row this week if a few weeks remain before frost. Pair with fall lettuce and fall beets. Start from What to plant now.