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When to Plant Persimmon in Clay County, IA

Persimmons are ornamental trees producing sweet, honey-flavored fruits in fall. American persimmons are astringent until fully ripe while Asian types can be eaten firm.

Clay County, Iowa is in USDA Zone 4b. The average last spring frost is April 24 and the first fall frost is October 11, giving you a growing season of approximately 170 days.

At an elevation of 984 feet, Clay County receives approximately 34.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80ยฐF, so choose short-season varieties of Persimmon to ensure they mature before fall.

Clay County, IA (Zone 4b) Moderate season
170 days
Last Spring Frost April 24
170 growing days
First Fall Frost October 11

Clay 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 15
Recommended (50%) ✓ Fits season
Transplant: May 22
Safe Start (90%) ✓ Fits season
Transplant: Jun 9

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 Clay County

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

Soil pH

Your soil pH (6.2โ€“7.0) is within Persimmon's preferred range (6.0โ€“7.5).

Soil Texture

The silt loam soil in Clay County is excellent for Persimmon โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.5%) โ€” Persimmon will thrive.

How to Plant Persimmon

120"
Between Plants
144"
Between Rows

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 220 gal / 100 sq ft
Persimmon needs ~18,250 GDD — county provides 1,700 GDD May not mature

Persimmon Planting Timeline โ€” Clay County, IA

Persimmon Planting Calendar

Activity When Date Range
Transplant Outdoors May 22 May 22 โ€“ Jun 5

ยท 120" apart ยท Rows 144" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

1095โ€“2555 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 4b

๐Ÿ“† Growing Season

170 days in Clay County

Growing Tips for Persimmon in Clay County

Direct sow Persimmon outdoors after April 24 in Clay County when soil has warmed and frost danger has passed.

Your 170.0-day growing season in Clay County is tight for Persimmon (1095.0-2555.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Choose self-fertile varieties or plant male and female trees. American types must be fully soft-ripe before eating. Asian varieties may be eaten when firm. Minimal pruning needed.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Persimmon in Clay County, IA?

Clay County is in Zone 4b with an average last frost of April 24. Plan your Persimmon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Clay County, IA?

Clay County, Iowa is in USDA Hardiness Zone 4b. The average last spring frost is April 24 and first fall frost is October 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Clay County gardeners in Zone 4b 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 Clay County, IA. Local conditions may vary. Last updated: April 2026.