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When to Plant Yarrow in Forsyth 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.

Forsyth County, North Carolina is in USDA Zone 7b. The average last spring frost is April 11 and the first fall frost is October 22, giving you a growing season of approximately 194 days.

At an elevation of 424 feet, Forsyth County receives approximately 44.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90ยฐF, 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.

Forsyth County, NC (Zone 7b) Moderate season
194 days
Last Spring Frost April 11
194 growing days
First Fall Frost October 22

Forsyth County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (19 days to spare)
Transplant: Apr 14 🍅 Harvest: Jul 14 – Sep 29
Recommended (50%) ✓ Fits season (19 days to spare)
Transplant: Apr 18 🍅 Harvest: Jul 18 – Oct 3
Safe Start (90%) ✓ Fits season (14 days to spare)
Transplant: May 8 🍅 Harvest: Aug 7 – Oct 23

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
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Yarrow needs ~1,838 GDD — county provides 3,395 GDD Excellent fit

Yarrow Planting Timeline โ€” Forsyth County, NC

Yarrow Planting Calendar

Activity When Date Range
Transplant Outdoors April 18 Apr 18 โ€“ May 2
Harvest July 18 Jul 18 โ€“ Oct 3

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 Transplant Outdoors
June โ€”
July Harvest
August Harvest
September Harvest
October Harvest
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

194 days

Growing Tips for Forsyth 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 Forsyth County, NC?

Forsyth County is in Zone 7b with an average last frost of April 11. Plan your Yarrow planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Forsyth County, NC?

Forsyth County, North Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 11 and first fall frost is October 22.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Forsyth 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 Forsyth County, NC. Local conditions may vary. Last updated: April 2026.