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When to Plant Parsley in Simpson County, KY

Parsley is a biennial herb available in flat-leaf (Italian) and curly varieties. It is a nutritional powerhouse rich in vitamins C and K and adds fresh flavor to countless dishes.

Simpson County, Kentucky is in USDA Zone 6b. The average last spring frost is April 6 and the first fall frost is October 29, giving you a growing season of approximately 206 days.

At an elevation of 3,996 feet, Simpson County receives approximately 49.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89ยฐF, providing good warmth for Parsley during the growing season.

Simpson County, KY (Zone 6b) Long season
206 days
Last Spring Frost April 6
206 growing days
First Fall Frost October 29

Simpson County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (88 days to spare)
Start indoors: Feb 23 Transplant: Mar 23 🍅 Harvest: May 25 – Jul 27
Recommended (50%) ✓ Fits season (87 days to spare)
Start indoors: Mar 2 Transplant: Mar 30 🍅 Harvest: Jun 1 – Aug 3
Safe Start (90%) ✓ Fits season (87 days to spare)
Start indoors: Mar 15 Transplant: Apr 12 🍅 Harvest: Jun 14 – Aug 16

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Parsley needs ~1,172 GDD — county provides 3,450 GDD Excellent fit

Parsley Planting Timeline โ€” Simpson County, KY

Parsley Planting Calendar

Activity When Date Range
Start Indoors March 2 Mar 2 โ€“ Mar 16
Transplant Outdoors March 30 Mar 30 โ€“ Apr 13
Direct Sow March 23 Mar 23 โ€“ Apr 13
Fall Sowing August 20 Aug 20 โ€“ Sep 3
Harvest June 1 Jun 1 โ€“ Aug 3

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“80 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6b

Growing Season

206 days

Growing Tips for Simpson County

Start seeds indoors 6-8 weeks before last frost. Soak seeds overnight as germination is slow. Harvest outer stems first to keep plants productive. Parsley attracts swallowtail butterflies.

Companion Planting

Good Companions

Avoid Planting Near

  • Mint
  • Lettuce

Level Up Your Garden

Frequently Asked Questions

When should I plant Parsley in Simpson County, KY?

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

What planting zone is Simpson County, KY?

Simpson County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 6 and first fall frost is October 29.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Simpson County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

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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 Simpson County, KY. Local conditions may vary. Last updated: April 2026.