When to Plant Radish in Hughes County, SD
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.
Hughes County, South Dakota is in USDA Zone 4a. The average last spring frost is May 11 and the first fall frost is October 2, giving you a growing season of approximately 144 days.
At an elevation of 633 feet, Hughes County receives approximately 32.6 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Radish to ensure they mature before fall.
Hughes County Soil Profile
Soil Type
Loam
Soil pH
6.2-7.2
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 — Hughes County, SD
Radish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | May 4 | May 4 – May 25 |
| Fall Sowing | July 10 | Jul 10 – Jul 24 |
| Harvest | June 1 | Jun 1 – Jun 22 |
Plant 0.5" deep · 2" apart · Rows 6" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Direct Sow |
| June | Harvest |
| July | Fall Sowing |
| August | — |
| 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 4a
Growing Season
144 days
Growing Tips for Hughes 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 Hughes County, SD?
Hughes County is in Zone 4a with an average last frost of May 11. Plan your Radish planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hughes County, SD?
Hughes County, South Dakota is in USDA Hardiness Zone 4a. The average last spring frost is May 11 and first fall frost is October 2.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Hughes County gardeners in Zone 4a organize planting dates, track what's growing, and never miss a planting window.
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