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When to Plant Microgreens in Erath County, TX

Microgreens are young seedlings of vegetables and herbs harvested at the cotyledon or first true leaf stage. They pack concentrated flavors and nutrients in a tiny package.

Erath County, Texas is in USDA Zone 7b. The average last spring frost is March 25 and the first fall frost is November 11, giving you a growing season of approximately 231 days.

At an elevation of 1,968 feet, Erath County receives approximately 55.9 inches of rainfall annually with predominantly clay soil. Summer highs average 92ยฐF, providing good warmth for Microgreens during the growing season. Clay soil retains moisture well for Microgreens, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Microgreens root diseases.

Erath County, TX (Zone 7b) Long season
231 days
Last Spring Frost March 25
231 growing days
First Fall Frost November 11

Erath County Soil Profile

Soil Type

Clay

Soil pH

7.3-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (198 days to spare)
Start indoors: Feb 9 Transplant: Mar 16 🍅 Harvest: Mar 23 – Apr 20
Recommended (50%) ✓ Fits season (196 days to spare)
Start indoors: Feb 18 Transplant: Mar 25 🍅 Harvest: Apr 1 – Apr 29
Safe Start (90%) ✓ Fits season (189 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Apr 22 – May 20

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.

Plant Water Budget

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

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Microgreens needs ~266 GDD — county provides 4,389 GDD Excellent fit

Microgreens Planting Timeline โ€” Erath County, TX

Microgreens Planting Calendar

Activity When Date Range
Start Indoors February 18 Feb 18 โ€“ Mar 4
Transplant Outdoors March 25 Mar 25 โ€“ Apr 8
Direct Sow March 11 Mar 11 โ€“ Apr 1
Fall Sowing September 2 Sep 2 โ€“ Sep 16
Harvest April 1 Apr 1 โ€“ Apr 29

Plant 0.5" deep ยท 2" apart ยท Rows 6" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

7โ€“21 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

231 days

Growing Tips for Erath County

Sow seeds densely on shallow trays of moist growing medium. Cover until germination, then provide light. Harvest with scissors when 1-3 inches tall. Grow year-round indoors.

Frequently Asked Questions

When should I plant Microgreens in Erath County, TX?

Erath County is in Zone 7b with an average last frost of March 25. Plan your Microgreens planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Erath County, TX?

Erath County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 25 and first fall frost is November 11.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Erath County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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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 Erath County, TX. Local conditions may vary. Last updated: April 2026.