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When to Plant Hot Peppers in Washington County, KS

Hot peppers range from mildly spicy jalapenos to scorching superhots. They require long, warm growing seasons and produce capsaicin that gives them their heat.

Washington County, Kansas is in USDA Zone 5b. The average last spring frost is April 21 and the first fall frost is October 14, giving you a growing season of approximately 176 days.

At an elevation of 562 feet, Washington County receives approximately 26.9 inches of rainfall annually with predominantly loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Hot Peppers to ensure they mature before fall.

Washington County, KS (Zone 5b) Moderate season
176 days
Last Spring Frost April 21
176 growing days
First Fall Frost October 14

Washington County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Feb 3 Transplant: Apr 28 🍅 Harvest: Jul 7 – Oct 13
Recommended (50%) ✗ May not fit
Start indoors: Feb 10 Transplant: May 5 🍅 Harvest: Jul 14 – Oct 20
Safe Start (90%) ✗ May not fit
Start indoors: Feb 22 Transplant: May 17 🍅 Harvest: Jul 26 – Nov 1

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
1.0″/week
Rainfall provides
0.6″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 673 gal / 100 sq ft
Drought risk

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

Hot Peppers needs ~1,235 GDD — county provides 2,288 GDD Excellent fit

Hot Peppers Planting Timeline โ€” Washington County, KS

Hot Peppers Planting Calendar

Activity When Date Range
Start Indoors February 10 Feb 10 โ€“ Feb 24
Transplant Outdoors May 5 May 5 โ€“ May 19
Direct Sow April 28 Apr 28 โ€“ May 19
Harvest July 14 Jul 14 โ€“ Oct 20

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March โ€”
April Direct Sow
May Transplant Outdoors Direct Sow
June โ€”
July Harvest
August Harvest
September Harvest
October Harvest
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

70โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 5b

Growing Season

176 days

Growing Tips for Washington County

Start seeds indoors 10-12 weeks before last frost as they germinate slowly. Use heat mats to maintain 80-85F soil temperature for germination. Stress plants slightly by reducing water to increase heat levels.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Kohlrabi

Level Up Your Garden

Frequently Asked Questions

When should I plant Hot Peppers in Washington County, KS?

Washington County is in Zone 5b with an average last frost of April 21. Plan your Hot Peppers planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Washington County, KS?

Washington County, Kansas is in USDA Hardiness Zone 5b. The average last spring frost is April 21 and first fall frost is October 14.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Washington County gardeners in Zone 5b 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 Washington County, KS. Local conditions may vary. Last updated: April 2026.