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When to Plant Fennel (herb) in Richmond 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.

Richmond County, North Carolina is in USDA Zone 7b. The average last spring frost is March 26 and the first fall frost is November 6, giving you a growing season of approximately 225 days.

At an elevation of 177 feet, Richmond County receives approximately 54 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. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel (herb) root diseases.

Richmond County, NC (Zone 7b) Long season
225 days
Last Spring Frost March 26
225 growing days
First Fall Frost November 6

Richmond County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (100 days to spare)
Start indoors: Feb 12 Transplant: Mar 12 🍅 Harvest: May 14 – Jul 23
Recommended (50%) ✓ Fits season (99 days to spare)
Start indoors: Feb 19 Transplant: Mar 19 🍅 Harvest: May 21 – Jul 30
Safe Start (90%) ✓ Fits season (97 days to spare)
Start indoors: Mar 9 Transplant: Apr 6 🍅 Harvest: Jun 8 – Aug 17

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
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Fennel (herb) needs ~1,369 GDD — county provides 4,106 GDD Excellent fit

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

Fennel (herb) Planting Calendar

Activity When Date Range
Start Indoors February 19 Feb 19 โ€“ Mar 5
Transplant Outdoors March 19 Mar 19 โ€“ Apr 2
Direct Sow March 12 Mar 12 โ€“ Apr 2
Fall Sowing August 28 Aug 28 โ€“ Sep 11
Harvest May 21 May 21 โ€“ Jul 30

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
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

225 days

Growing Tips for Richmond 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

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Frequently Asked Questions

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

Richmond County is in Zone 7b with an average last frost of March 26. Plan your Fennel (herb) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Richmond County, NC?

Richmond County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is March 26 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 Richmond 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 Richmond County, NC. Local conditions may vary. Last updated: April 2026.