When to Plant Radish in Rutherford County, NC
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.
Rutherford County, North Carolina is in USDA Zone 7a. The average last spring frost is April 2 and the first fall frost is November 1, giving you a growing season of approximately 213 days.
At an elevation of 178 feet, Rutherford County receives approximately 46.6 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89°F, providing good warmth for Radish during the growing season. Clay soil retains moisture well for Radish, but amend with compost to improve drainage and prevent root rot.
Rutherford County Soil Profile
Soil Type
Clay Loam
Soil pH
5.3-6.8
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.
Soil Compatibility in Rutherford County
How your county's soil matches Radish's growing requirements.
Soil pH
Your soil pH (5.3–6.8) overlaps with Radish's range (6.0–7.0), though not a perfect match.
Soil Texture
Your soil has 34% clay, which can cause forked or stunted roots for Radish. Use raised beds with loose, sandy mix for best results.
Organic Matter
Organic matter is moderate (2.5%). Annual compost additions will help Radish.
How to Plant Radish
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Radish
Sow every 2.4 weeks. Last sowing by Sep 27 to harvest before frost.
For a dedicated fall crop, sow by Aug 23.
Plant Water Budget
Monthly Watering Guide for Radish
Radish needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Radish Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.4" | 0" | ❄️ Dormant |
| Feb | — | 4.1" | 0" | ❄️ Dormant |
| Mar | — | 4" | 0" | ❄️ Dormant |
| Apr | 2.2" | 3.5" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 3.9" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 5.2" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 4.5" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 3.9" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 2.8" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 3.9" | 0" | ✅ Rainfall sufficient |
| Dec | — | 3.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Nov in Rutherford County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Radish Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Radish Planting Timeline — Rutherford County, NC
Radish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | March 19 | Mar 19 – Apr 9 |
| Harvest | April 16 | Apr 16 – May 7 |
| Fall Sowing | August 23 | Aug 23 – Sep 6 |
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 | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Natural rainfall sufficient
📅 Days to Maturity
22–35 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 7a
📆 Growing Season
213 days in Rutherford County
Growing Tips for Radish in Rutherford County
Direct sow Radish outdoors after April 02 in Rutherford County when soil has warmed and frost danger has passed.
With Rutherford County's clay soil (34% clay), work in 3-4 inches of compost before planting Radish. Avoid tilling when soil is wet to prevent compaction.
Your generous 213.0-day season in Rutherford County allows multiple plantings of Radish. Sow every 11.0 days for continuous harvest.
Common pests for Radish in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
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
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Radish in Other Locations
Frequently Asked Questions
When should I plant Radish in Rutherford County, NC?
Rutherford County is in Zone 7a with an average last frost of April 2. Plan your Radish planting based on this frost date — see the calendar above for exact timing.
What planting zone is Rutherford County, NC?
Rutherford County, North Carolina is in USDA Hardiness Zone 7a. The average last spring frost is April 2 and first fall frost is November 1.
Plan Your Garden with Confidence
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