When to Plant Radish in Douglas County, MO
Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.
Douglas County, Missouri is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 25, giving you a growing season of approximately 199 days.
At an elevation of 758 feet, Douglas County receives approximately 39 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Radish during the growing season.
Douglas County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-6.9
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Radish Planting Timeline — Douglas County, MO
Radish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | March 26 | Mar 26 – Apr 16 |
| Fall Sowing | August 16 | Aug 16 – Aug 30 |
| Harvest | April 23 | Apr 23 – May 14 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Direct Sow |
| April | Direct Sow Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
22–35 days
Soil pH
6 – 7
USDA Zone
Zone 6b
Growing Season
199 days
Growing Tips for Douglas County
Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Radish in Other Locations
Frequently Asked Questions
When should I plant Radish in Douglas County, MO?
Douglas County is in Zone 6b with an average last frost of April 9. Plan your Radish planting based on this frost date — see the calendar above for exact timing.
What planting zone is Douglas County, MO?
Douglas County, Missouri is in USDA Hardiness Zone 6b. The average last spring frost is April 9 and first fall frost is October 25.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Douglas County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.
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