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When to Plant Tomatillo in Natchitoches Parish, LA

Natchitoches Parish, Louisiana Zone 9a May

May to-do list for Natchitoches Parish, Louisiana

Welcome to May in Zone 9a. These are the moves that will have the biggest impact on your growing season.

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

    If you can't use it all right away, check the food-preservation section of your planner.

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.

Natchitoches Parish, Louisiana is in USDA Zone 9a. The average last spring frost is March 13 and the first fall frost is November 12, giving you a growing season of approximately 244 days.

At an elevation of 227 feet, Natchitoches Parish receives approximately 49.2 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Tomatillo during the growing season.

Natchitoches Parish, LA (Zone 9a) Long season
244 days
Last Spring Frost March 13
244 growing days
First Fall Frost November 12
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Natchitoches Parish Soil Profile

Soil Type

Loam

Soil pH

6.2-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (102 days to spare)
Start indoors: Jan 21 Transplant: Mar 11 🍅 Harvest: May 13 – Jul 22
Recommended (50%) ✓ Fits season (104 days to spare)
Start indoors: Jan 30 Transplant: Mar 20 🍅 Harvest: May 22 – Jul 31
Safe Start (90%) ✓ Fits season (96 days to spare)
Start indoors: Feb 26 Transplant: Apr 16 🍅 Harvest: Jun 18 – Aug 27

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 Natchitoches Parish

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

Soil pH

Your soil pH (6.2–7.0) is within Tomatillo's preferred range (6.0–7.0).

Soil Texture

The loam soil in Natchitoches Parish is excellent for Tomatillo — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). 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 244-day season

Sow every 6.9 weeks. Last sowing by Aug 19 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 550 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 3.8" 0" ❄️ Dormant
Mar 4.8" 4.9" 0" ✅ Rainfall sufficient
Apr 4.8" 3.9" 0.9" 💧 Light watering
May 4.8" 3.7" 1.1" 💧 Light watering
Jun 4.8" 4.5" 0.3" 💧 Light watering
Jul 4.8" 5.2" 0" ✅ Rainfall sufficient
Aug 4.8" 4.8" 0" ✅ Rainfall sufficient
Sep 4.8" 3.9" 0.9" 💧 Light watering
Oct 4.8" 2.7" 2.1" 💧 Light watering
Nov 4.8" 3.8" 1" 💧 Light watering
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Natchitoches Parish). 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 ~1,323 GDD — county provides 4,453 GDD Excellent fit

Tomatillo Planting Timeline — Natchitoches Parish, LA

Tomatillo Planting Calendar

Activity When Date Range
Start Indoors January 30 Jan 30 – Feb 13
Transplant Outdoors March 20 Mar 20 – Apr 3
Direct Sow March 13 Mar 13 – Apr 3
Harvest May 22 May 22 – Jul 31

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
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: ideal

🗺️ USDA Zone

Zone 9a

📆 Growing Season

244 days in Natchitoches Parish

Growing Tips for Tomatillo in Natchitoches Parish

Direct sow Tomatillo outdoors after March 13 in Natchitoches Parish 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 Natchitoches Parish, LA?

Natchitoches Parish is in Zone 9a with an average last frost of March 13. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.

What planting zone is Natchitoches Parish, LA?

Natchitoches Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is March 13 and first fall frost is November 12.

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Your Natchitoches Parish Garden Planner — Free

A 24-page printable planner built for Natchitoches Parish (Zone 9a). 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 Natchitoches Parish, LA. 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.