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When to Plant Persimmon in Powell County, MT

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.

Powell County, Montana is in USDA Zone 4a. The average last spring frost is June 6 and the first fall frost is September 8, giving you a growing season of approximately 94 days.

At an elevation of 5,514 feet, Powell County receives approximately 22.9 inches of rainfall annually with predominantly loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Persimmon to ensure they mature before fall.

Powell County, MT (Zone 4a) Very short season
94 days
Last Spring Frost June 6
94 growing days
First Fall Frost September 8

Powell County Soil Profile

Soil Type

Loam

Soil pH

6.5-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Jun 17
Recommended (50%) ✓ Fits season
Transplant: Jul 4
Safe Start (90%) ✓ Fits season
Transplant: Jul 18

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
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Persimmon needs ~23,725 GDD — county provides 1,222 GDD May not mature

Persimmon Planting Timeline โ€” Powell County, MT

Persimmon Planting Calendar

Activity When Date Range
Transplant Outdoors July 4 Jul 4 โ€“ Jul 18

ยท 120" apart ยท Rows 144" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May โ€”
June โ€”
July Transplant Outdoors
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€“2555 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 4a

Growing Season

94 days

Growing Tips for Powell County

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 Powell County, MT?

Powell County is in Zone 4a with an average last frost of June 6. Plan your Persimmon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Powell County, MT?

Powell County, Montana is in USDA Hardiness Zone 4a. The average last spring frost is June 6 and first fall frost is September 8.

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Plan Your Garden with Confidence

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