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When to Plant Calabash in Morrow County, OH

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.

Morrow County, Ohio is in USDA Zone 5b. The average last spring frost is April 29 and the first fall frost is October 15, giving you a growing season of approximately 169 days.

At an elevation of 800 feet, Morrow County receives approximately 34.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Calabash during the growing season.

Morrow County, OH (Zone 5b) Moderate season
169 days
Last Spring Frost April 29
169 growing days
First Fall Frost October 15

Morrow County Soil Profile

Soil Type

Silt Loam

Soil pH

6-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (11 days to spare)
Start indoors: Mar 1 Transplant: May 10 🍅 Harvest: Aug 2 – Sep 27
Recommended (50%) ✓ Fits season (15 days to spare)
Start indoors: Mar 4 Transplant: May 13 🍅 Harvest: Aug 5 – Sep 30
Safe Start (90%) ✓ Fits season (10 days to spare)
Start indoors: Mar 21 Transplant: May 30 🍅 Harvest: Aug 22 – Oct 17

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
0.2″/week
Watering frequency Only during dry spells
Season total 226 gal / 100 sq ft
Calabash needs ~1,525 GDD — county provides 2,577 GDD Excellent fit

Calabash Planting Timeline โ€” Morrow County, OH

Calabash Planting Calendar

Activity When Date Range
Start Indoors March 4 Mar 4 โ€“ Mar 18
Transplant Outdoors May 13 May 13 โ€“ May 27
Direct Sow May 6 May 6 โ€“ May 27
Harvest August 5 Aug 5 โ€“ Sep 30

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors
April โ€”
May Transplant Outdoors Direct Sow
June โ€”
July โ€”
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 5b

Growing Season

169 days

Growing Tips for Morrow 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 Morrow County, OH?

Morrow County is in Zone 5b with an average last frost of April 29. Plan your Calabash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Morrow County, OH?

Morrow County, Ohio is in USDA Hardiness Zone 5b. The average last spring frost is April 29 and first fall frost is October 15.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Morrow County gardeners in Zone 5b 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 Morrow County, OH. Local conditions may vary. Last updated: April 2026.