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When to Plant Hot Peppers in Adair County, MO

Adair County, Missouri Zone 6a May

Top priorities for Adair County, Missouri gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Adair County, Missouri.

Avg. last frost April 17
Avg. first frost October 17
Soil temp (4") 56°F
Watering Moderate
Pest pressure Low
Daylight 14.2 hrs
  1. Move hot peppers into the garden

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

Get ahead of June
  • Starting indoors: hot peppers

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

Adair County, Missouri is in USDA Zone 6a. The average last spring frost is April 17 and the first fall frost is October 17, giving you a growing season of approximately 183 days.

At an elevation of 1,327 feet, Adair County receives approximately 34.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Hot Peppers during the growing season.

Adair County, MO (Zone 6a) Moderate season
183 days
Last Spring Frost April 17
183 growing days
First Fall Frost October 17

Adair County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (1 days to spare)
Start indoors: Jan 31 Transplant: Apr 25 🍅 Harvest: Jul 4 – Oct 10
Recommended (50%) ✓ Fits season (1 days to spare)
Start indoors: Feb 6 Transplant: May 1 🍅 Harvest: Jul 10 – Oct 16
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.

Soil Compatibility in Adair County

How your county's soil matches Hot Peppers's growing requirements.

Soil pH

Your soil pH (5.8–6.7) overlaps with Hot Peppers's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Adair County is excellent for Hot Peppers — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Hot Peppers.

Organic Matter

Organic matter is moderate (3.0%). Annual compost additions will help Hot Peppers.

How to Plant Hot Peppers

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Hot Peppers

3
successive plantings in your 183-day season

Sow every 8 weeks. Last sowing by Jun 19 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Hot Peppers

Hot Peppers needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Hot Peppers Needs Rainfall You Supplement Action
Jan 1.7" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 3.6" 0.7" 💧 Light watering
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 3.5" 0.8" 💧 Light watering
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 2.9" 1.4" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Adair County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Hot Peppers Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Hot Peppers needs ~1,378 GDD — county provides 2,653 GDD Excellent fit

Hot Peppers Planting Timeline — Adair County, MO

Hot Peppers Planting Calendar

Activity When Date Range
Start Indoors February 6 Feb 6 – Feb 20
Transplant Outdoors May 1 May 1 – May 15
Direct Sow April 24 Apr 24 – May 15
Harvest July 10 Jul 10 – Oct 16

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

70–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

183 days in Adair County

Growing Tips for Hot Peppers in Adair County

Direct sow Hot Peppers outdoors after April 17 in Adair County when soil has warmed and frost danger has passed.

Common pests for Hot Peppers in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Hot Peppers in Adair County, MO?

Adair County is in Zone 6a with an average last frost of April 17. Plan your Hot Peppers planting based on this frost date — see the calendar above for exact timing.

What planting zone is Adair County, MO?

Adair County, Missouri is in USDA Hardiness Zone 6a. The average last spring frost is April 17 and first fall frost is October 17.

🌱

Your Adair County Garden Planner — Free

A 24-page printable planner built for Adair County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Adair County, MO. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.