Radish Planting Guide — All Zones
Raphanus sativus
Last updated: May 15, 2026Quick Facts
Sunlight
☀️ Full Sun
Water Needs
💧💧 Moderate
Spacing
3 inches apart
Planting Depth
0.5 inch
Min Soil Temp
40°F
Germination
3–7 days
Days to Maturity
22–35 days
Frost Tolerance
Moderate frost tolerance
Soil pH
6.0–7.0
Difficulty
Easy
Planting Schedule by Zone
Select your USDA zone below for a detailed guide with tips specific to your region.
Zone 2Zone 2aZone 2bZone 3Zone 3aZone 3bZone 4Zone 4aZone 4bZone 5Zone 5aZone 5bZone 6Zone 6aZone 6bZone 7Zone 7aZone 7bZone 8Zone 8aZone 8bZone 9Zone 9aZone 9bZone 10Zone 10aZone 10bZone 11Zone 11aZone 11b
| Zone | Start Indoors | Transplant | Direct Sow | Harvest Start | Harvest End |
|---|---|---|---|---|---|
| Zone 2 | — | — | May 25 | Jun 21 | Aug 3 |
| Zone 3 | — | — | May 15 | Jun 11 | Jul 24 |
| Zone 4 | — | — | May 10 | Jun 6 | Jul 19 |
| Zone 5 | — | — | Apr 30 | May 27 | Jul 9 |
| Zone 6 | — | — | Apr 15 | May 12 | Jun 24 |
| Zone 7 | — | — | Apr 5 | May 2 | Jun 14 |
| Zone 8 | — | — | Mar 20 | Apr 16 | May 29 |
| Zone 9 | — | — | Feb 28 | Mar 27 | May 9 |
| Zone 10 | — | — | Feb 10 | Mar 9 | Apr 21 |
| Zone 11 | — | — | Jan 15 | Feb 11 | Mar 26 |
What you'll need — Your Zone
🛒 Radish — Seeds & Supplies
- 🌱 Radish Seeds
Search for these at your local garden center or nursery.
Companion Planting
Companion planting improves growth, deters pests, and makes better use of garden space.
✓ Good Companions
✗ Avoid Nearby
Hyssop
📚 Data Sources
Frost dates: NOAA Climate Normals 1991–2020, National Centers for Environmental Information.Hardiness zones: USDA Plant Hardiness Zone Map, Agricultural Research Service.
Growing requirements: Cooperative Extension Services — NC State, Penn State, University of Florida IFAS.
Companion planting: Cornell University Cooperative Extension.
Data compiled from public agricultural sources. Always verify with your local extension office for micro-climate adjustments.