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When to Plant Yarrow in Woodruff County, AR

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.

Woodruff County, Arkansas is in USDA Zone 7b. The average last spring frost is March 20 and the first fall frost is November 6, giving you a growing season of approximately 231 days.

At an elevation of 1,343 feet, Woodruff County receives approximately 49.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89ยฐF, providing good warmth for Yarrow during the growing season.

Woodruff County, AR (Zone 7b) Long season
231 days
Last Spring Frost March 20
231 growing days
First Fall Frost November 6

Woodruff County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (58 days to spare)
Transplant: Mar 19 🍅 Harvest: Jun 18 – Sep 3
Recommended (50%) ✓ Fits season (56 days to spare)
Transplant: Mar 27 🍅 Harvest: Jun 26 – Sep 11
Safe Start (90%) ✓ Fits season (57 days to spare)
Transplant: Apr 15 🍅 Harvest: Jul 15 – Sep 30

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 ~1,759 GDD — county provides 3,869 GDD Excellent fit

Yarrow Planting Timeline โ€” Woodruff County, AR

Yarrow Planting Calendar

Activity When Date Range
Transplant Outdoors March 27 Mar 27 โ€“ Apr 10
Harvest June 26 Jun 26 โ€“ Sep 11

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 7b

Growing Season

231 days

Growing Tips for Woodruff 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 Woodruff County, AR?

Woodruff County is in Zone 7b with an average last frost of March 20. Plan your Yarrow planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Woodruff County, AR?

Woodruff County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 20 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 Woodruff 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 Woodruff County, AR. Local conditions may vary. Last updated: April 2026.