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When to Plant Yarrow in Northampton County, NC

Yarrow is a drought-tolerant perennial herb with feathery foliage and flat-topped flower clusters in white, yellow, pink, or red. It attracts beneficial insects and is used in herbal medicine.

Northampton County, North Carolina is in USDA Zone 7b. The average last spring frost is March 29 and the first fall frost is November 6, giving you a growing season of approximately 222 days.

At an elevation of 576 feet, Northampton County receives approximately 46.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91ยฐF, providing good warmth for Yarrow during the growing season. Clay soil retains moisture well for Yarrow, but amend with compost to improve drainage and prevent root rot.

Northampton County, NC (Zone 7b) Long season
222 days
Last Spring Frost March 29
222 growing days
First Fall Frost November 6

Northampton 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 (51 days to spare)
Transplant: Mar 29 🍅 Harvest: Jun 28 – Sep 13
Recommended (50%) ✓ Fits season (47 days to spare)
Transplant: Apr 5 🍅 Harvest: Jul 5 – Sep 20
Safe Start (90%) ✓ Fits season (47 days to spare)
Transplant: Apr 17 🍅 Harvest: Jul 17 – Oct 2

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
0.5″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Yarrow needs ~1,916 GDD — county provides 4,051 GDD Excellent fit

Yarrow Planting Timeline โ€” Northampton County, NC

Yarrow Planting Calendar

Activity When Date Range
Transplant Outdoors April 5 Apr 5 โ€“ Apr 19
Harvest July 5 Jul 5 โ€“ Sep 20

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Transplant Outdoors
May โ€”
June โ€”
July Harvest
August Harvest
September Harvest
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

90โ€“120 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 7b

Growing Season

222 days

Growing Tips for Northampton County

Direct sow or start from divisions. Yarrow thrives in poor soil and is very drought-tolerant. Deadhead to encourage reblooming. Divide clumps every 3 years.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Yarrow in Northampton County, NC?

Northampton County is in Zone 7b with an average last frost of March 29. Plan your Yarrow planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Northampton County, NC?

Northampton County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is March 29 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 Northampton 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 Northampton County, NC. Local conditions may vary. Last updated: April 2026.