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When to Plant Arugula in Franklin County, NC

Arugula is a fast-growing cool-season green with a peppery, nutty flavor. It is excellent in salads and can be harvested as baby greens or mature leaves.

Franklin County, North Carolina is in USDA Zone 7b. The average last spring frost is March 27 and the first fall frost is November 6, giving you a growing season of approximately 224 days.

At an elevation of 285 feet, Franklin County receives approximately 43.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92ยฐF, providing good warmth for Arugula during the growing season. Clay soil retains moisture well for Arugula, but amend with compost to improve drainage and prevent root rot.

Franklin County, NC (Zone 7b) Long season
224 days
Last Spring Frost March 27
224 growing days
First Fall Frost November 6

Franklin County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (128 days to spare)
Start indoors: Feb 14 Transplant: Mar 21 🍅 Harvest: Apr 25 – Jun 27
Recommended (50%) ✓ Fits season (126 days to spare)
Start indoors: Feb 20 Transplant: Mar 27 🍅 Harvest: May 1 – Jul 3
Safe Start (90%) ✓ Fits season (125 days to spare)
Start indoors: Mar 7 Transplant: Apr 11 🍅 Harvest: May 16 – Jul 18

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

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 356 gal / 100 sq ft
Arugula needs ~760 GDD — county provides 4,256 GDD Excellent fit

Arugula Planting Timeline โ€” Franklin County, NC

Arugula Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 โ€“ Mar 6
Transplant Outdoors March 27 Mar 27 โ€“ Apr 10
Direct Sow March 13 Mar 13 โ€“ Apr 3
Fall Sowing August 28 Aug 28 โ€“ Sep 11
Harvest May 1 May 1 โ€“ Jul 3

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July Harvest
August Fall Sowing
September Fall Sowing
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

30โ€“50 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

224 days

Growing Tips for Franklin County

Sow seeds directly every 2-3 weeks for continuous harvest. Provide afternoon shade in warm weather to prevent bolting. Harvest outer leaves first to extend production.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Arugula in Franklin County, NC?

Franklin County is in Zone 7b with an average last frost of March 27. Plan your Arugula planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Franklin County, NC?

Franklin County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is March 27 and first fall frost is November 6.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Franklin County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Franklin County, NC. Local conditions may vary. Last updated: April 2026.