Blog

When to Plant Fennel (herb) in Orange County, NC

Herb fennel is grown for its aromatic leaves, stalks, and seeds rather than a bulb. It has a strong anise flavor and its flowers attract beneficial insects.

Orange County, North Carolina is in USDA Zone 7b. The average last spring frost is April 2 and the first fall frost is November 3, giving you a growing season of approximately 215 days.

At an elevation of 628 feet, Orange County receives approximately 41.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91ยฐF, providing good warmth for Fennel (herb) during the growing season. Clay soil retains moisture well for Fennel (herb), but amend with compost to improve drainage and prevent root rot.

Orange County, NC (Zone 7b) Long season
215 days
Last Spring Frost April 2
215 growing days
First Fall Frost November 3

Orange County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (92 days to spare)
Start indoors: Feb 17 Transplant: Mar 17 🍅 Harvest: May 19 – Jul 28
Recommended (50%) ✓ Fits season (89 days to spare)
Start indoors: Feb 26 Transplant: Mar 26 🍅 Harvest: May 28 – Aug 6
Safe Start (90%) ✓ Fits season (84 days to spare)
Start indoors: Mar 17 Transplant: Apr 14 🍅 Harvest: Jun 16 – Aug 25

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 366 gal / 100 sq ft
Fennel (herb) needs ~1,369 GDD — county provides 3,923 GDD Excellent fit

Fennel (herb) Planting Timeline โ€” Orange County, NC

Fennel (herb) Planting Calendar

Activity When Date Range
Start Indoors February 26 Feb 26 โ€“ Mar 12
Transplant Outdoors March 26 Mar 26 โ€“ Apr 9
Direct Sow March 19 Mar 19 โ€“ Apr 9
Fall Sowing August 25 Aug 25 โ€“ Sep 8
Harvest May 28 May 28 โ€“ Aug 6

Plant 1" deep ยท 15" apart ยท Rows 24" 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 Harvest
September Fall Sowing
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“90 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 7b

Growing Season

215 days

Growing Tips for Orange County

Direct sow in spring or fall. Unlike Florence fennel, herb fennel does not form a bulb. Harvest fronds as needed and seeds when they turn brown. Self-sows readily.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Peppers
  • Green Beans

Level Up Your Garden

Frequently Asked Questions

When should I plant Fennel (herb) in Orange County, NC?

Orange County is in Zone 7b with an average last frost of April 2. Plan your Fennel (herb) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Orange County, NC?

Orange County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 2 and first fall frost is November 3.

๐ŸŒฑ

Plan Your Garden with Confidence

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

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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