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When to Plant Catnip in Cimarron County, OK

Catnip is a hardy perennial herb in the mint family known for its effect on cats. It also makes a calming tea and is a useful companion plant that repels some pests.

Cimarron County, Oklahoma is in USDA Zone 6b. The average last spring frost is April 19 and the first fall frost is October 18, giving you a growing season of approximately 182 days.

At an elevation of 1,132 feet, Cimarron County receives approximately 28.5 inches of rainfall annually with predominantly loam soil. Summer highs average 89ยฐF, providing good warmth for Catnip during the growing season.

Cimarron County, OK (Zone 6b) Moderate season
182 days
Last Spring Frost April 19
182 growing days
First Fall Frost October 18

Cimarron County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (48 days to spare)
Transplant: Apr 21 🍅 Harvest: Jun 23 – Aug 25
Recommended (50%) ✓ Fits season (49 days to spare)
Transplant: Apr 26 🍅 Harvest: Jun 28 – Aug 30
Safe Start (90%) ✓ Fits season (49 days to spare)
Transplant: May 10 🍅 Harvest: Jul 12 – Sep 13

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
Drought risk

Water stress score is 8/10 โ€” consider drought-tolerant varieties and mulching

Catnip needs ~1,172 GDD — county provides 3,048 GDD Excellent fit

Catnip Planting Timeline โ€” Cimarron County, OK

Catnip Planting Calendar

Activity When Date Range
Transplant Outdoors April 26 Apr 26 โ€“ May 10
Harvest June 28 Jun 28 โ€“ Aug 30

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 Transplant Outdoors
June Harvest
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

60โ€“80 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 6b

Growing Season

182 days

Growing Tips for Cimarron County

Direct sow or start indoors. Catnip is very easy to grow and can become invasive. Harvest leaves before flowering for tea. Protect young plants from cats.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Catnip in Cimarron County, OK?

Cimarron County is in Zone 6b with an average last frost of April 19. Plan your Catnip planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cimarron County, OK?

Cimarron County, Oklahoma is in USDA Hardiness Zone 6b. The average last spring frost is April 19 and first fall frost is October 18.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Cimarron County gardeners in Zone 6b 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 Cimarron County, OK. Local conditions may vary. Last updated: April 2026.