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When to Plant Microgreens in Crittenden County, KY

Crittenden County, Kentucky Zone 7a May

This month in Crittenden County, Kentucky

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

Avg. last frost April 4
Avg. first frost October 31
Soil temp (4") 57°F
Watering Moderate
Pest pressure Low
Daylight 14 hrs
  1. Begin indoor sowing: microgreens

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

  2. Basket week: microgreens

    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.

Crittenden County, Kentucky is in USDA Zone 7a. The average last spring frost is April 4 and the first fall frost is October 31, giving you a growing season of approximately 210 days.

At an elevation of 2,837 feet, Crittenden County receives approximately 44.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Microgreens during the growing season.

Crittenden County, KY (Zone 7a) Long season
210 days
Last Spring Frost April 4
210 growing days
First Fall Frost October 31
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Crittenden County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (173 days to spare)
Start indoors: Feb 21 Transplant: Mar 28 🍅 Harvest: Apr 4 – May 2
Recommended (50%) ✓ Fits season (175 days to spare)
Start indoors: Feb 28 Transplant: Apr 4 🍅 Harvest: Apr 11 – May 9
Safe Start (90%) ✓ Fits season (183 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Apr 24 – May 22

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 Crittenden County

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

Soil pH

Your soil pH (5.3–7.0) overlaps with Microgreens's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.5%). 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

41
successive plantings in your 210-day season

Sow every 0.7 weeks. Last sowing by Oct 10 to harvest before frost.

For a dedicated fall crop, sow by Aug 22.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 238 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 3.5" 0" ❄️ Dormant
Feb 3.3" 0" ❄️ Dormant
Mar 4.4" 0" ❄️ Dormant
Apr 4.3" 3.4" 0.9" 💧 Light watering
May 4.3" 3.6" 0.7" 💧 Light watering
Jun 4.3" 3.7" 0.6" 💧 Light watering
Jul 4.3" 5.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 3.4" 0.9" 💧 Light watering
Oct 4.3" 2.6" 1.7" 💧 Light watering
Nov 3.8" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Crittenden 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 ~245 GDD — county provides 3,675 GDD Excellent fit

Microgreens Planting Timeline — Crittenden County, KY

Microgreens Planting Calendar

Activity When Date Range
Start Indoors February 28 Feb 28 – Mar 14
Transplant Outdoors April 4 Apr 4 – Apr 18
Direct Sow March 21 Mar 21 – Apr 11
Harvest April 11 Apr 11 – May 9
Fall Sowing August 22 Aug 22 – Sep 5

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

Month-by-Month Timeline

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

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

7–21 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

210 days in Crittenden County

Growing Tips for Microgreens in Crittenden County

Direct sow Microgreens outdoors after April 04 in Crittenden County when soil has warmed and frost danger has passed.

Your generous 210.0-day season in Crittenden 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 Crittenden County, KY?

Crittenden County is in Zone 7a with an average last frost of April 4. Plan your Microgreens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crittenden County, KY?

Crittenden County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 4 and first fall frost is October 31.

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Your Crittenden County Garden Planner — Free

A 24-page printable planner built for Crittenden 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 Crittenden County, KY. 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.