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When to Plant Microgreens in San Augustine 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.

San Augustine County, Texas is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 16, giving you a growing season of approximately 256 days.

At an elevation of 146 feet, San Augustine County receives approximately 62.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96ยฐF, so Microgreens may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Microgreens will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Microgreens root diseases.

San Augustine County, TX (Zone 8b) Long season
256 days
Last Spring Frost March 5
256 growing days
First Fall Frost November 16

San Augustine County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.4-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (225 days to spare)
Start indoors: Jan 21 Transplant: Feb 25 🍅 Harvest: Mar 4 – Apr 1
Recommended (50%) ✓ Fits season (221 days to spare)
Start indoors: Jan 29 Transplant: Mar 5 🍅 Harvest: Mar 12 – Apr 9
Safe Start (90%) ✓ Fits season (211 days to spare)
Start indoors: Feb 25 Transplant: Apr 1 🍅 Harvest: Apr 8 – May 6

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 San Augustine County

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

Soil pH

Your soil pH (5.4โ€“6.6) overlaps with Microgreens's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is low (1.8%). Add 2-3 inches of compost before planting Microgreens.

How to Plant Microgreens

0.5"
Planting Depth
2"
Between Plants
6"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Microgreens

50
successive plantings in your 256-day season

Sow every 0.7 weeks. Last sowing by Oct 26 to harvest before frost.

For a dedicated fall crop, sow by Sep 07.

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 ~308 GDD — county provides 5,632 GDD Excellent fit

Microgreens Planting Timeline โ€” San Augustine County, TX

Microgreens Planting Calendar

Activity When Date Range
Start Indoors January 29 Jan 29 โ€“ Feb 12
Transplant Outdoors March 5 Mar 5 โ€“ Mar 19
Direct Sow February 19 Feb 19 โ€“ Mar 12
Fall Sowing September 7 Sep 7 โ€“ Sep 21
Harvest March 12 Mar 12 โ€“ Apr 9

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

1"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

7โ€“21 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 8b

๐Ÿ“† Growing Season

256 days in San Augustine County

Growing Tips for Microgreens in San Augustine County

Direct sow Microgreens outdoors after March 05 in San Augustine County when soil has warmed and frost danger has passed.

Sandy soil in San Augustine County dries quickly โ€” mulch Microgreens with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96ยฐF in San Augustine County, provide afternoon shade for Microgreens and water deeply in the morning.

Your generous 256.0-day season in San Augustine County allows multiple plantings of Microgreens. Sow every 3.0 days for continuous harvest.

General growing tips

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 San Augustine County, TX?

San Augustine County is in Zone 8b with an average last frost of March 5. Plan your Microgreens planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is San Augustine County, TX?

San Augustine County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 16.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help San Augustine County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for San Augustine County, TX. Local conditions may vary. Last updated: April 2026.