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When to Plant Tomatillo in Claiborne County, MS

Claiborne County, Mississippi Zone 8b May

What to do in May

May is a pivotal month for Claiborne County, Mississippi gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 12
Avg. first frost November 13
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Start harvesting tomatillo

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Looking ahead to June
  • First harvests: 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.

Claiborne County, Mississippi is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 13, giving you a growing season of approximately 246 days.

At an elevation of 115 feet, Claiborne County receives approximately 55.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 97°F, so Tomatillo may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Tomatillo, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tomatillo root diseases.

Claiborne County, MS (Zone 8b) Long season
246 days
Last Spring Frost March 12
246 growing days
First Fall Frost November 13

Claiborne County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (95 days to spare)
Start indoors: Jan 16 Transplant: Mar 20 🍅 Harvest: May 22 – Jul 31
Recommended (50%) ✓ Fits season (99 days to spare)
Start indoors: Jan 22 Transplant: Mar 26 🍅 Harvest: May 28 – Aug 6
Safe Start (90%) ✓ Fits season (89 days to spare)
Start indoors: Feb 18 Transplant: Apr 22 🍅 Harvest: Jun 24 – Sep 2

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 Claiborne County

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

Soil pH

Your soil pH (5.3–6.5) is more acidic than Tomatillo prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Tomatillo.

Organic Matter

Organic matter is moderate (2.5%). 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 246-day season

Sow every 6.9 weeks. Last sowing by Aug 20 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 4.2" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 4.8" 5.2" 0" ✅ Rainfall sufficient
Apr 4.8" 4.7" 0.1" 💧 Light watering
May 4.8" 4.7" 0.1" 💧 Light watering
Jun 4.8" 5.4" 0" ✅ Rainfall sufficient
Jul 4.8" 6" 0" ✅ Rainfall sufficient
Aug 4.8" 5.6" 0" ✅ Rainfall sufficient
Sep 4.8" 4.6" 0.2" 💧 Light watering
Oct 4.8" 3.2" 1.6" 💧 Light watering
Nov 4.8" 3.8" 1" 💧 Light watering
Dec 4.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Claiborne 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 ~1,649 GDD — county provides 5,596 GDD Excellent fit

Tomatillo Planting Timeline — Claiborne County, MS

Tomatillo Planting Calendar

Activity When Date Range
Start Indoors January 22 Jan 22 – Feb 5
Transplant Outdoors March 26 Mar 26 – Apr 9
Direct Sow March 19 Mar 19 – Apr 9
Harvest May 28 May 28 – Aug 6

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Natural rainfall sufficient

📅 Days to Maturity

60–85 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

246 days in Claiborne County

Growing Tips for Tomatillo in Claiborne County

Direct sow Tomatillo outdoors after March 12 in Claiborne County when soil has warmed and frost danger has passed.

With Claiborne County's clay soil (27% clay), work in 3-4 inches of compost before planting Tomatillo. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 97°F in Claiborne County, provide afternoon shade for Tomatillo and water deeply in the morning.

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 Claiborne County, MS?

Claiborne County is in Zone 8b with an average last frost of March 12. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.

What planting zone is Claiborne County, MS?

Claiborne County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 13.

🌱

Your Claiborne County Garden Planner — Free

A 24-page printable planner built for Claiborne County (Zone 8b). 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 Claiborne County, MS. 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.