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When to Plant Yarrow in McIntosh County, OK

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.

McIntosh County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 2 and the first fall frost is November 1, giving you a growing season of approximately 213 days.

At an elevation of 586 feet, McIntosh County receives approximately 23.8 inches of rainfall annually with predominantly loam soil. Summer highs average 88ยฐF, providing good warmth for Yarrow during the growing season.

McIntosh County, OK (Zone 7a) Long season
213 days
Last Spring Frost April 2
213 growing days
First Fall Frost November 1

McIntosh County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (40 days to spare)
Transplant: Apr 1 🍅 Harvest: Jul 1 – Sep 16
Recommended (50%) ✓ Fits season (38 days to spare)
Transplant: Apr 9 🍅 Harvest: Jul 9 – Sep 24
Safe Start (90%) ✓ Fits season (46 days to spare)
Transplant: Apr 22 🍅 Harvest: Jul 22 – Oct 7

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
0.5″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 70 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Yarrow needs ~1,680 GDD — county provides 3,408 GDD Excellent fit

Yarrow Planting Timeline โ€” McIntosh County, OK

Yarrow Planting Calendar

Activity When Date Range
Transplant Outdoors April 9 Apr 9 โ€“ Apr 23
Harvest July 9 Jul 9 โ€“ Sep 24

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 7a

Growing Season

213 days

Growing Tips for McIntosh 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 McIntosh County, OK?

McIntosh County is in Zone 7a with an average last frost of April 2. Plan your Yarrow planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is McIntosh County, OK?

McIntosh County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 2 and first fall frost is November 1.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help McIntosh County gardeners in Zone 7a 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 McIntosh County, OK. Local conditions may vary. Last updated: April 2026.