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When to Plant Calabash in Warren County, KY

Calabash (bottle gourd) is a tropical vine producing edible young fruits used in Asian and African cooking. Mature dried fruits serve as natural containers and utensils.

Warren County, Kentucky is in USDA Zone 6b. The average last spring frost is April 8 and the first fall frost is October 28, giving you a growing season of approximately 203 days.

At an elevation of 3,957 feet, Warren County receives approximately 44.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Calabash during the growing season.

Warren County, KY (Zone 6b) Long season
203 days
Last Spring Frost April 8
203 growing days
First Fall Frost October 28

Warren 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 (47 days to spare)
Start indoors: Feb 6 Transplant: Apr 17 🍅 Harvest: Jul 10 – Sep 4
Recommended (50%) ✓ Fits season (49 days to spare)
Start indoors: Feb 11 Transplant: Apr 22 🍅 Harvest: Jul 15 – Sep 9
Safe Start (90%) ✓ Fits season (45 days to spare)
Start indoors: Feb 27 Transplant: May 8 🍅 Harvest: Jul 31 – Sep 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.

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 128 gal / 100 sq ft
Calabash needs ~1,600 GDD — county provides 3,248 GDD Excellent fit

Calabash Planting Timeline โ€” Warren County, KY

Calabash Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 โ€“ Feb 25
Transplant Outdoors April 22 Apr 22 โ€“ May 6
Direct Sow April 15 Apr 15 โ€“ May 6
Harvest July 15 Jul 15 โ€“ Sep 9

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

80โ€“120 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 6b

Growing Season

203 days

Growing Tips for Warren County

Start seeds indoors 4 weeks early. Provide a very strong trellis for heavy fruits. Harvest young for cooking or let mature on the vine for crafts. Requires a long, warm season.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Calabash in Warren County, KY?

Warren County is in Zone 6b with an average last frost of April 8. Plan your Calabash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Warren County, KY?

Warren County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 8 and first fall frost is October 28.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Warren 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 Warren County, KY. Local conditions may vary. Last updated: April 2026.