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When to Plant Acorn Squash in Yakutat City and Borough, AK

Acorn squash is a small winter squash with dark green, ribbed skin and mildly sweet orange flesh. It is perfect for stuffing and roasting as individual servings.

Yakutat City and Borough, Alaska is in USDA Zone 6b. The average last spring frost is May 20 and the first fall frost is September 25, giving you a growing season of approximately 128 days.

At an elevation of 246 feet, Yakutat City and Borough receives approximately 40.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 66ยฐF, so choose short-season varieties of Acorn Squash to ensure they mature before fall.

Yakutat City and Borough, AK (Zone 6b) Short season
128 days
Last Spring Frost May 20
128 growing days
First Fall Frost September 25

Yakutat City and Borough Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 10 Transplant: May 29 🍅 Harvest: Aug 21 – Sep 25
Recommended (50%) ✗ May not fit
Start indoors: Apr 15 Transplant: Jun 3 🍅 Harvest: Aug 26 – Sep 30
Safe Start (90%) ✗ May not fit
Start indoors: Apr 27 Transplant: Jun 15 🍅 Harvest: Sep 7 – Oct 12

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
1.3″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Acorn Squash needs ~0 GDD — county provides 0 GDD May not mature

Acorn Squash Planting Timeline โ€” Yakutat City and Borough, AK

Acorn Squash Planting Calendar

Activity When Date Range
Start Indoors April 15 Apr 15 โ€“ Apr 29
Transplant Outdoors June 3 Jun 3 โ€“ Jun 17
Direct Sow May 27 May 27 โ€“ Jun 17
Harvest August 26 Aug 26 โ€“ Sep 30

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Start Indoors
May Direct Sow
June Transplant Outdoors Direct Sow
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€“100 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 6b

Growing Season

128 days

Growing Tips for Yakutat City and Borough

Direct sow after last frost. Harvest when the ground spot turns orange and the skin is hard. Acorn squash has a shorter storage life than butternut, lasting about 2 months.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Acorn Squash in Yakutat City and Borough, AK?

Yakutat City and Borough is in Zone 6b with an average last frost of May 20. Plan your Acorn Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Yakutat City and Borough, AK?

Yakutat City and Borough, Alaska is in USDA Hardiness Zone 6b. The average last spring frost is May 20 and first fall frost is September 25.

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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 Yakutat City and Borough, AK. Local conditions may vary. Last updated: April 2026.