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When to Plant Yarrow in Georgetown County, SC

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.

Georgetown County, South Carolina is in USDA Zone 8b. The average last spring frost is March 19 and the first fall frost is November 15, giving you a growing season of approximately 241 days.

At an elevation of 102 feet, Georgetown County receives approximately 52.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94ยฐF, providing good warmth for Yarrow during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Yarrow will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Yarrow root diseases.

Georgetown County, SC (Zone 8b) Long season
241 days
Last Spring Frost March 19
241 growing days
First Fall Frost November 15

Georgetown County Soil Profile

Soil Type

Sandy Loam

Soil pH

4.8-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (70 days to spare)
Transplant: Mar 14 🍅 Harvest: Jun 13 – Aug 29
Recommended (50%) ✓ Fits season (66 days to spare)
Transplant: Mar 26 🍅 Harvest: Jun 25 – Sep 10
Safe Start (90%) ✓ Fits season (61 days to spare)
Transplant: Apr 14 🍅 Harvest: Jul 14 – Sep 29

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 ~2,152 GDD — county provides 4,940 GDD Excellent fit

Yarrow Planting Timeline โ€” Georgetown County, SC

Yarrow Planting Calendar

Activity When Date Range
Transplant Outdoors March 26 Mar 26 โ€“ Apr 9
Harvest June 25 Jun 25 โ€“ Sep 10

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Transplant Outdoors
April Transplant Outdoors
May โ€”
June Harvest
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 8b

Growing Season

241 days

Growing Tips for Georgetown 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 Georgetown County, SC?

Georgetown County is in Zone 8b with an average last frost of March 19. Plan your Yarrow planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Georgetown County, SC?

Georgetown County, South Carolina is in USDA Hardiness Zone 8b. The average last spring frost is March 19 and first fall frost is November 15.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Georgetown County gardeners in Zone 8b 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 Georgetown County, SC. Local conditions may vary. Last updated: April 2026.