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When to Plant Microgreens in Laurel County, KY

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.

Laurel County, Kentucky is in USDA Zone 6b. The average last spring frost is April 19 and the first fall frost is October 21, giving you a growing season of approximately 185 days.

At an elevation of 2,549 feet, Laurel County receives approximately 51 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90ยฐF, providing good warmth for Microgreens during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Microgreens root diseases.

Laurel County, KY (Zone 6b) Moderate season
185 days
Last Spring Frost April 19
185 growing days
First Fall Frost October 21

Laurel County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (153 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: Apr 19 – May 17
Recommended (50%) ✓ Fits season (150 days to spare)
Start indoors: Mar 15 Transplant: Apr 19 🍅 Harvest: Apr 26 – May 24
Safe Start (90%) ✓ Fits season (142 days to spare)
Start indoors: Apr 4 Transplant: May 9 🍅 Harvest: May 16 – Jun 13

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 Laurel County

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

Soil pH

Your soil pH (5.3โ€“6.9) overlaps with Microgreens's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The silt loam soil in Laurel County is excellent for Microgreens โ€” 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

36
successive plantings in your 185-day season

Sow every 0.7 weeks. Last sowing by Sep 30 to harvest before frost.

For a dedicated fall crop, sow by Aug 12.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.2″/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 ~245 GDD — county provides 3,237 GDD Excellent fit

Microgreens Planting Timeline โ€” Laurel County, KY

Microgreens Planting Calendar

Activity When Date Range
Start Indoors March 15 Mar 15 โ€“ Mar 29
Transplant Outdoors April 19 Apr 19 โ€“ May 3
Direct Sow April 5 Apr 5 โ€“ Apr 26
Fall Sowing August 12 Aug 12 โ€“ Aug 26
Harvest April 26 Apr 26 โ€“ May 24

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors
April Transplant Outdoors Direct Sow Harvest
May Transplant Outdoors Harvest
June โ€”
July โ€”
August Fall Sowing
September โ€”
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 6b

๐Ÿ“† Growing Season

185 days in Laurel County

Growing Tips for Microgreens in Laurel County

Direct sow Microgreens outdoors after April 19 in Laurel County when soil has warmed and frost danger has passed.

Your generous 185.0-day season in Laurel 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 Laurel County, KY?

Laurel County is in Zone 6b with an average last frost of April 19. Plan your Microgreens planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Laurel County, KY?

Laurel County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 19 and first fall frost is October 21.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Laurel County gardeners in Zone 6b 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 Laurel County, KY. Local conditions may vary. Last updated: April 2026.