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When to Plant Hardy Kiwi in Ottawa County, OH

Hardy kiwi produces grape-sized, smooth-skinned fruits eaten whole without peeling. Unlike fuzzy kiwi, it is extremely cold-hardy to -25F once established.

Ottawa County, Ohio is in USDA Zone 6a. The average last spring frost is April 25 and the first fall frost is October 25, giving you a growing season of approximately 183 days.

At an elevation of 1,264 feet, Ottawa County receives approximately 31.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Hardy Kiwi during the growing season.

Ottawa County, OH (Zone 6a) Moderate season
183 days
Last Spring Frost April 25
183 growing days
First Fall Frost October 25

Ottawa County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 9
Recommended (50%) ✓ Fits season
Transplant: May 16
Safe Start (90%) ✓ Fits season
Transplant: May 24

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
0.7″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 466 gal / 100 sq ft
Hardy Kiwi needs ~23,360 GDD — county provides 2,928 GDD May not mature

Hardy Kiwi Planting Timeline โ€” Ottawa County, OH

Hardy Kiwi Planting Calendar

Activity When Date Range
Transplant Outdoors May 16 May 16 โ€“ May 30

ยท 72" apart ยท Rows 96" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June โ€”
July โ€”
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

1095โ€“1825 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 6a

Growing Season

183 days

Growing Tips for Ottawa County

Plant male and female vines for pollination. Provide very strong trellising as vines become massive. Prune similarly to grapes. Protect young plants from late spring frost.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Hardy Kiwi in Ottawa County, OH?

Ottawa County is in Zone 6a with an average last frost of April 25. Plan your Hardy Kiwi planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Ottawa County, OH?

Ottawa County, Ohio is in USDA Hardiness Zone 6a. The average last spring frost is April 25 and first fall frost is October 25.

๐ŸŒฑ

Plan Your Garden with Confidence

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