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When to Plant Microgreens in Colorado 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.

Colorado County, Texas is in USDA Zone 8b. The average last spring frost is February 26 and the first fall frost is December 4, giving you a growing season of approximately 281 days.

At an elevation of 87 feet, Colorado County receives approximately 70.5 inches of rainfall annually with predominantly clay soil. Summer highs average 90ยฐF, 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.

Colorado County, TX (Zone 8b) Year-round
281 days
Last Spring Frost February 26
281 growing days
First Fall Frost December 4

Colorado County Soil Profile

Soil Type

Clay

Soil pH

7.3-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (249 days to spare)
Start indoors: Jan 8 Transplant: Feb 12 🍅 Harvest: Feb 19 – Mar 19
Recommended (50%) ✓ Fits season (246 days to spare)
Start indoors: Jan 22 Transplant: Feb 26 🍅 Harvest: Mar 5 – Apr 2
Safe Start (90%) ✓ Fits season (238 days to spare)
Start indoors: Feb 13 Transplant: Mar 20 🍅 Harvest: Mar 27 – Apr 24

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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Microgreens needs ~245 GDD — county provides 4,935 GDD Excellent fit

Microgreens Planting Timeline โ€” Colorado County, TX

Microgreens Planting Calendar

Activity When Date Range
Start Indoors January 22 Jan 22 โ€“ Feb 5
Transplant Outdoors February 26 Feb 26 โ€“ Mar 12
Direct Sow February 12 Feb 12 โ€“ Mar 5
Fall Sowing September 25 Sep 25 โ€“ Oct 9
Harvest March 5 Mar 5 โ€“ Apr 2

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors Transplant Outdoors Direct Sow
March Transplant Outdoors Direct Sow Harvest
April Harvest
May โ€”
June โ€”
July โ€”
August โ€”
September Fall Sowing
October Fall Sowing
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 8b

Growing Season

281 days

Growing Tips for Colorado 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 Colorado County, TX?

Colorado County is in Zone 8b with an average last frost of February 26. Plan your Microgreens planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Colorado County, TX?

Colorado County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 26 and first fall frost is December 4.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Colorado County gardeners in Zone 8b 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 Colorado County, TX. Local conditions may vary. Last updated: April 2026.