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When to Plant Tomatillo in Sebastian County, AR

Sebastian County, Arkansas Zone 7a April

Top priorities for Sebastian County, Arkansas gardeners in April

Each item below is timed to Sebastian County, Arkansas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 5
Avg. first frost October 31
Soil temp (4") 56°F
Watering Moderate
Pest pressure Moderate
Daylight 12.9 hrs
  1. Time to transplant tomatillo

    Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.

  2. Sow tomatillo where they'll grow

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

To set up a strong May, finish these tasks
  • Starting indoors: tomatillo

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Tomatillos are a Mexican staple that produces tart, green fruits enclosed in papery husks. They are essential for salsa verde and green sauces.

Sebastian County, Arkansas is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is October 31, giving you a growing season of approximately 209 days.

At an elevation of 796 feet, Sebastian County receives approximately 45 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Tomatillo during the growing season.

Sebastian County, AR (Zone 7a) Long season
209 days
Last Spring Frost April 5
209 growing days
First Fall Frost October 31
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Sebastian County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (69 days to spare)
Start indoors: Feb 4 Transplant: Apr 8 🍅 Harvest: Jun 10 – Aug 19
Recommended (50%) ✓ Fits season (62 days to spare)
Start indoors: Feb 15 Transplant: Apr 19 🍅 Harvest: Jun 21 – Aug 30
Safe Start (90%) ✓ Fits season (72 days to spare)
Start indoors: Feb 26 Transplant: Apr 30 🍅 Harvest: Jul 2 – Sep 10

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 Sebastian County

How your county's soil matches Tomatillo's growing requirements.

Soil pH

Your soil pH (5.3–6.8) overlaps with Tomatillo's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Tomatillo

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

Succession Planting Tomatillo

4
successive plantings in your 209-day season

Sow every 6.9 weeks. Last sowing by Aug 07 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 364 gal / 100 sq ft

Monthly Watering Guide for Tomatillo

Tomatillo needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Tomatillo Needs Rainfall You Supplement Action
Jan 3.5" 0" ❄️ Dormant
Feb 4" 0" ❄️ Dormant
Mar 4.6" 0" ❄️ Dormant
Apr 4.8" 3" 1.8" 💧 Light watering
May 4.8" 3.5" 1.3" 💧 Light watering
Jun 4.8" 3.5" 1.3" 💧 Light watering
Jul 4.8" 4.8" 0" ✅ Rainfall sufficient
Aug 4.8" 4.4" 0.4" 💧 Light watering
Sep 4.8" 3" 1.8" 💧 Light watering
Oct 4.8" 3.2" 1.6" 💧 Light watering
Nov 3.8" 0" ❄️ Dormant
Dec 3.6" 0" ❄️ Dormant

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

Tomatillo 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.

Tomatillo needs ~1,432 GDD — county provides 4,127 GDD Excellent fit

Tomatillo Planting Timeline — Sebastian County, AR

Tomatillo Planting Calendar

Activity When Date Range
Start Indoors February 15 Feb 15 – Mar 1
Transplant Outdoors April 19 Apr 19 – May 3
Direct Sow April 12 Apr 12 – May 3
Harvest June 21 Jun 21 – Aug 30

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

60–85 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

209 days in Sebastian County

Growing Tips for Tomatillo in Sebastian County

Direct sow Tomatillo outdoors after April 05 in Sebastian County when soil has warmed and frost danger has passed.

Common pests for Tomatillo 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 6-8 weeks before last frost. Plant at least two plants for cross-pollination. Harvest when fruits fill the husk and it begins to split.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Dill

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Tomatillo in Sebastian County, AR?

Sebastian County is in Zone 7a with an average last frost of April 5. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sebastian County, AR?

Sebastian County, Arkansas is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is October 31.

🌱

Your Sebastian County Garden Planner — Free

A 24-page printable planner built for Sebastian County (Zone 7a). 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 Sebastian County, AR. Local conditions may vary. Last updated: April 2026.

Sources & credits

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