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When to Plant Microgreens in San Saba 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 Saba County, Texas is in USDA Zone 8a. The average last spring frost is March 19 and the first fall frost is November 14, giving you a growing season of approximately 240 days.

At an elevation of 3,436 feet, San Saba County receives approximately 60.8 inches of rainfall annually with predominantly loam soil. Summer highs average 93ยฐF, providing good warmth for Microgreens during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Microgreens root diseases.

San Saba County, TX (Zone 8a) Long season
240 days
Last Spring Frost March 19
240 growing days
First Fall Frost November 14

San Saba County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (211 days to spare)
Start indoors: Feb 1 Transplant: Mar 8 🍅 Harvest: Mar 15 – Apr 12
Recommended (50%) ✓ Fits season (205 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: Mar 26 – Apr 23
Safe Start (90%) ✓ Fits season (198 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: Apr 19 – May 17

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 Saba County

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

Soil pH

Your soil pH (6.7โ€“7.3) overlaps with Microgreens's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in San Saba County is excellent for Microgreens โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.0%). Annual compost additions will help 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

47
successive plantings in your 240-day season

Sow every 0.7 weeks. Last sowing by Oct 24 to harvest before frost.

For a dedicated fall crop, sow by Sep 05.

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

Monthly Watering Guide for Microgreens

Microgreens needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Microgreens Needs Rainfall You Supplement Action
Jan โ€” 1.6" 0" โ„๏ธ Dormant
Feb โ€” 2" 0" โ„๏ธ Dormant
Mar 4.3" 4" 0.3" ๐Ÿ’ง Light watering
Apr 4.3" 6" 0" โœ… Rainfall sufficient
May 4.3" 9.6" 0" โœ… Rainfall sufficient
Jun 4.3" 10.7" 0" โœ… Rainfall sufficient
Jul 4.3" 8.1" 0" โœ… Rainfall sufficient
Aug 4.3" 6.9" 0" โœ… Rainfall sufficient
Sep 4.3" 5.2" 0" โœ… Rainfall sufficient
Oct 4.3" 3.6" 0.7" ๐Ÿ’ง Light watering
Nov 4.3" 1.8" 2.5" ๐Ÿšฟ Regular watering
Dec โ€” 1.3" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in San Saba County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Microgreens 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" โ€” every day above 50ยฐF 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.

Microgreens needs ~276 GDD — county provides 4,740 GDD Excellent fit

Microgreens Planting Timeline โ€” San Saba County, TX

Microgreens Planting Calendar

Activity When Date Range
Start Indoors February 12 Feb 12 โ€“ Feb 26
Transplant Outdoors March 19 Mar 19 โ€“ Apr 2
Direct Sow March 5 Mar 5 โ€“ Mar 26
Harvest March 26 Mar 26 โ€“ Apr 23
Fall Sowing September 5 Sep 5 โ€“ Sep 19

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Transplant Outdoors Direct Sow Harvest
April Transplant Outdoors 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 8a

๐Ÿ“† Growing Season

240 days in San Saba County

Growing Tips for Microgreens in San Saba County

Direct sow Microgreens outdoors after March 19 in San Saba County when soil has warmed and frost danger has passed.

Your generous 240.0-day season in San Saba 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 Saba County, TX?

San Saba County is in Zone 8a with an average last frost of March 19. Plan your Microgreens planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is San Saba County, TX?

San Saba County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 19 and first fall frost is November 14.

๐ŸŒฑ

Plan Your Garden with Confidence

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

Get Your Free Garden Planner →

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