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When to Plant Tomatillo in Edwards County, TX

Edwards County, Texas Zone 8b May

May in Edwards County, Texas — your action list

Your garden in Edwards County, Texas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 2
Avg. first frost November 8
Soil temp (4") 61°F
Watering High
Pest pressure High
Daylight 13.5 hrs
  1. Start tomatillo under lights

    You're about 24 weeks out from your last frost — the perfect window to get these germinating indoors.

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.

Edwards County, Texas is in USDA Zone 8b. The average last spring frost is April 2 and the first fall frost is November 8, giving you a growing season of approximately 220 days.

At an elevation of 4,265 feet, Edwards County receives approximately 61.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 102°F, so Tomatillo may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Tomatillo will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tomatillo root diseases.

Edwards County, TX (Zone 8b) Long season
220 days
Last Spring Frost April 2
220 growing days
First Fall Frost November 8
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Edwards County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.8-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (76 days to spare)
Start indoors: Jan 29 Transplant: Apr 2 🍅 Harvest: Jun 4 – Aug 13
Recommended (50%) ✓ Fits season (73 days to spare)
Start indoors: Feb 12 Transplant: Apr 16 🍅 Harvest: Jun 18 – Aug 27
Safe Start (90%) ✓ Fits season (80 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Jul 4 – Sep 12

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 Edwards County

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

Soil pH

Your soil pH (7.8–8.1) is more alkaline than Tomatillo prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Edwards County warms quickly in spring but drains fast. Tomatillo will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting Tomatillo.

How to Plant Tomatillo

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

Succession Planting Tomatillo

4
successive plantings in your 220-day season

Sow every 6.9 weeks. Last sowing by Aug 15 to harvest before frost.

Plant Water Budget

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

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

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 4.5" 0" ❄️ Dormant
Feb 3.3" 0" ❄️ Dormant
Mar 3.3" 0" ❄️ Dormant
Apr 4.8" 2" 2.8" 🚿 Regular watering
May 4.8" 1.3" 3.5" 🚿 Regular watering
Jun 4.8" 1.8" 3" 🚿 Regular watering
Jul 4.8" 11.5" 0" ✅ Rainfall sufficient
Aug 4.8" 13.8" 0" ✅ Rainfall sufficient
Sep 4.8" 7" 0" ✅ Rainfall sufficient
Oct 4.8" 4.9" 0" ✅ Rainfall sufficient
Nov 4.8" 3.6" 1.2" 💧 Light watering
Dec 4.6" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Edwards 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 ~1,921 GDD — county provides 5,830 GDD Excellent fit

Tomatillo Planting Timeline — Edwards County, TX

Tomatillo Planting Calendar

Activity When Date Range
Start Indoors February 12 Feb 12 – Feb 26
Transplant Outdoors April 16 Apr 16 – Apr 30
Direct Sow April 9 Apr 9 – Apr 30
Harvest June 18 Jun 18 – Aug 27

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March
April Transplant Outdoors Direct Sow
May
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 · Natural rainfall sufficient

📅 Days to Maturity

60–85 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

220 days in Edwards County

Growing Tips for Tomatillo in Edwards County

Direct sow Tomatillo outdoors after April 02 in Edwards County when soil has warmed and frost danger has passed.

Sandy soil in Edwards County dries quickly — mulch Tomatillo with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 102°F in Edwards 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 Edwards County, TX?

Edwards County is in Zone 8b with an average last frost of April 2. Plan your Tomatillo planting based on this frost date — see the calendar above for exact timing.

What planting zone is Edwards County, TX?

Edwards County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is April 2 and first fall frost is November 8.

🌱

Your Edwards County Garden Planner — Free

A 24-page printable planner built for Edwards 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 Edwards County, TX. 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.