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When to Plant Horehound in Kingfisher County, OK

Horehound is a woolly, drought-tolerant perennial herb traditionally used for cough remedies and candy. It has a distinctive bitter, menthol-like flavor.

Kingfisher County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 9 and the first fall frost is October 28, giving you a growing season of approximately 202 days.

At an elevation of 817 feet, Kingfisher County receives approximately 31.4 inches of rainfall annually with predominantly loam soil. Summer highs average 91ยฐF, providing good warmth for Horehound during the growing season.

Kingfisher County, OK (Zone 7a) Long season
202 days
Last Spring Frost April 9
202 growing days
First Fall Frost October 28

Kingfisher County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (62 days to spare)
Transplant: Apr 11 🍅 Harvest: Jun 27 – Aug 22
Recommended (50%) ✓ Fits season (62 days to spare)
Transplant: Apr 16 🍅 Harvest: Jul 2 – Aug 27
Safe Start (90%) ✓ Fits season (67 days to spare)
Transplant: Apr 29 🍅 Harvest: Jul 15 – Sep 9

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
0.7″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Horehound needs ~1,506 GDD — county provides 3,686 GDD Excellent fit

Horehound Planting Timeline โ€” Kingfisher County, OK

Horehound Planting Calendar

Activity When Date Range
Transplant Outdoors April 16 Apr 16 โ€“ Apr 30
Harvest July 2 Jul 2 โ€“ Aug 27

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 โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

75โ€“90 days

Soil pH

6 โ€“ 8

USDA Zone

Zone 7a

Growing Season

202 days

Growing Tips for Kingfisher County

Direct sow or start from divisions. Thrives in poor, dry soil. Harvest stems just before flowering. Deadhead to prevent aggressive self-seeding. Very drought-tolerant once established.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Horehound in Kingfisher County, OK?

Kingfisher County is in Zone 7a with an average last frost of April 9. Plan your Horehound planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Kingfisher County, OK?

Kingfisher County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 9 and first fall frost is October 28.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kingfisher County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Kingfisher County, OK. Local conditions may vary. Last updated: April 2026.