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When to Plant Feverfew in Caddo County, OK

Feverfew is a bushy perennial herb with small daisy-like flowers and aromatic leaves. It has been used traditionally for headache relief and is a cheerful garden plant.

Caddo County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 4 and the first fall frost is November 4, giving you a growing season of approximately 214 days.

At an elevation of 762 feet, Caddo County receives approximately 32.1 inches of rainfall annually with predominantly loam soil. Summer highs average 89ยฐF, providing good warmth for Feverfew during the growing season.

Caddo County, OK (Zone 7a) Long season
214 days
Last Spring Frost April 4
214 growing days
First Fall Frost November 4

Caddo County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (38 days to spare)
Transplant: Apr 4 🍅 Harvest: Jul 4 – Sep 19
Recommended (50%) ✓ Fits season (39 days to spare)
Transplant: Apr 11 🍅 Harvest: Jul 11 – Sep 26
Safe Start (90%) ✓ Fits season (43 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
0.6″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Feverfew needs ~1,759 GDD — county provides 3,584 GDD Excellent fit

Feverfew Planting Timeline โ€” Caddo County, OK

Feverfew Planting Calendar

Activity When Date Range
Transplant Outdoors April 11 Apr 11 โ€“ Apr 25
Harvest July 11 Jul 11 โ€“ Sep 26

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

6 โ€“ 7

USDA Zone

Zone 7a

Growing Season

214 days

Growing Tips for Caddo County

Start seeds indoors or direct sow on the soil surface. Deadhead regularly to prevent aggressive self-seeding. Divide clumps every 2-3 years to maintain vigor.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Feverfew in Caddo County, OK?

Caddo County is in Zone 7a with an average last frost of April 4. Plan your Feverfew planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Caddo County, OK?

Caddo County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 4 and first fall frost is November 4.

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Plan Your Garden with Confidence

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