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When to Plant Microgreens in Grant County, NE

Grant County, Nebraska Zone 5a June

What to do in June

Your Grant County, Nebraska garden is entering a new phase. Here's what's on the schedule for June and why each task matters now.

Avg. last frost May 13
Avg. first frost October 5
Soil temp (4") 64°F
Watering High
Pest pressure High
Daylight 15 hrs
  1. Start microgreens indoors

    These need a head start before your last frost (May 13). Sow into cells now so you're ready to transplant in a few weeks.

  2. Collect microgreens at their peak

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

To set up a strong July, finish these tasks
  • Fall sowing: microgreens

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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.

Grant County, Nebraska is in USDA Zone 5a. The average last spring frost is May 13 and the first fall frost is October 5, giving you a growing season of approximately 145 days.

At an elevation of 689 feet, Grant County receives approximately 24.2 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Microgreens to ensure they mature before fall.

Grant County, NE (Zone 5a) Short season
145 days
Last Spring Frost May 13
145 growing days
First Fall Frost October 5
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Grant County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.5

Drainage

Well Drained

Microgreens Planting Risk Windows

Early Start (70% safe) ✓ Fits season (108 days to spare)
Start indoors: Apr 3 Transplant: May 8 🍅 Harvest: May 15 – Jun 12
Recommended (50%) ✓ Fits season (110 days to spare)
Start indoors: Apr 8 Transplant: May 13 🍅 Harvest: May 20 – Jun 17
Safe Start (90%) ✓ Fits season (111 days to spare)
Start indoors: Apr 16 Transplant: May 21 🍅 Harvest: May 28 – Jun 25

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 Grant County

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

Soil pH

Your soil pH (6.2–7.5) overlaps with Microgreens's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Grant County is excellent for Microgreens — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.7%). 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

28
successive plantings in your 145-day season

Sow every 0.7 weeks. Last sowing by Sep 14 to harvest before frost.

For a dedicated fall crop, sow by Jul 27.

Microgreens Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 463 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — 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 1.5" 0" ❄️ Dormant
Feb 1.2" 0" ❄️ Dormant
Mar 2.3" 0" ❄️ Dormant
Apr 2.7" 0" ❄️ Dormant
May 4.3" 2.8" 1.5" 💧 Light watering
Jun 4.3" 1.6" 2.7" 🚿 Regular watering
Jul 4.3" 1.9" 2.4" 🚿 Regular watering
Aug 4.3" 2.3" 2" 💧 Light watering
Sep 4.3" 2.1" 2.2" 🚿 Regular watering
Oct 4.3" 2.5" 1.8" 💧 Light watering
Nov 1.7" 0" ❄️ Dormant
Dec 1.6" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Grant 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 ~140 GDD — county provides 1,450 GDD Excellent fit

Microgreens Planting Timeline — Grant County, NE

Microgreens Planting Calendar

Activity When Date Range
Start Indoors April 8 Apr 8 – Apr 22
Transplant Outdoors May 13 May 13 – May 27
Direct Sow April 29 Apr 29 – May 20
Harvest May 20 May 20 – Jun 17
Fall Sowing July 27 Jul 27 – Aug 10

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

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

7–21 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

145 days in Grant County

Growing Tips for Microgreens in Grant County

Direct sow Microgreens outdoors after May 13 in Grant County when soil has warmed and frost danger has passed.

Your generous 145.0-day season in Grant County allows multiple plantings of Microgreens. Sow every 3.0 days for continuous harvest.

Grant County receives only 24" of rain annually. Microgreens needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Grant County, NE?

Grant County is in Zone 5a with an average last frost of May 13. Plan your Microgreens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Grant County, NE?

Grant County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 13 and first fall frost is October 5.

🌱

Your Grant County Garden Planner — Free

A 22-page printable planner built for Grant County (Zone 5a). 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 Grant County, NE. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.