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When to Plant Microgreens in Sherman County, TX

Sherman County, Texas Zone 7a May

May to-do list for Sherman County, Texas

We've pulled the most time-sensitive tasks for Sherman County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost April 20
Avg. first frost October 18
Soil temp (4") 56°F
Watering Critical
Pest pressure Low
Daylight 13.9 hrs
  1. Indoor seed-starting week for microgreens

    These need a head start before your last frost (April 20). Sow into cells now so you're ready to transplant in a few weeks.

  2. Harvest microgreens as they ripen

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

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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.

Sherman County, Texas is in USDA Zone 7a. The average last spring frost is April 20 and the first fall frost is October 18, giving you a growing season of approximately 181 days.

At an elevation of 3,372 feet, Sherman County receives approximately 46.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Microgreens during the growing season. Sandy soil warms quickly in spring — great for early planting — but Microgreens will need more frequent watering and organic matter to retain nutrients.

Sherman County, TX (Zone 7a) Moderate season
181 days
Last Spring Frost April 20
181 growing days
First Fall Frost October 18
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Sherman County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.6-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (146 days to spare)
Start indoors: Mar 10 Transplant: Apr 14 🍅 Harvest: Apr 21 – May 19
Recommended (50%) ✓ Fits season (146 days to spare)
Start indoors: Mar 16 Transplant: Apr 20 🍅 Harvest: Apr 27 – May 25
Safe Start (90%) ✓ Fits season (147 days to spare)
Start indoors: Apr 1 Transplant: May 6 🍅 Harvest: May 13 – Jun 10

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 Sherman County

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

Soil pH

Your soil pH (7.6–8.1) is more alkaline than Microgreens prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Sherman 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 (1.0%). 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

35
successive plantings in your 181-day season

Sow every 0.7 weeks. Last sowing by Sep 27 to harvest before frost.

For a dedicated fall crop, sow by Aug 09.

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
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 3.3" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 2.7" 0" ❄️ Dormant
Apr 4.3" 1.7" 2.6" 🚿 Regular watering
May 4.3" 1.1" 3.2" 🚿 Regular watering
Jun 4.3" 1.6" 2.7" 🚿 Regular watering
Jul 4.3" 7.8" 0" ✅ Rainfall sufficient
Aug 4.3" 9.3" 0" ✅ Rainfall sufficient
Sep 4.3" 5.6" 0" ✅ Rainfall sufficient
Oct 4.3" 4.9" 0" ✅ Rainfall sufficient
Nov 3" 0" ❄️ Dormant
Dec 3" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Sherman County). Supplement amounts are based on average rainfall — 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" — 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.

Microgreens needs ~256 GDD — county provides 3,303 GDD Excellent fit

Microgreens Planting Timeline — Sherman County, TX

Microgreens Planting Calendar

Activity When Date Range
Start Indoors March 16 Mar 16 – Mar 30
Transplant Outdoors April 20 Apr 20 – May 4
Direct Sow April 6 Apr 6 – Apr 27
Harvest April 27 Apr 27 – May 25
Fall Sowing August 9 Aug 9 – Aug 23

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

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

7–21 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

181 days in Sherman County

Growing Tips for Microgreens in Sherman County

Direct sow Microgreens outdoors after April 20 in Sherman County when soil has warmed and frost danger has passed.

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

Your generous 181.0-day season in Sherman 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 Sherman County, TX?

Sherman County is in Zone 7a with an average last frost of April 20. Plan your Microgreens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sherman County, TX?

Sherman County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is April 20 and first fall frost is October 18.

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Your Sherman County Garden Planner — Free

A 24-page printable planner built for Sherman County (Zone 7a). 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 Sherman 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.