When to Plant Squash (Winter) in Kodiak Island Borough, AK
Winter squash includes butternut, acorn, delicata, and hubbard varieties grown to full maturity with hard rinds for storage. They develop sweet, dense flesh.
Kodiak Island Borough, Alaska is in USDA Zone 6a. The average last spring frost is May 13 and the first fall frost is September 29, giving you a growing season of approximately 139 days.
At an elevation of 2,281 feet, Kodiak Island Borough receives approximately 27.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 60°F, so choose short-season varieties of Squash (Winter) to ensure they mature before fall.
Kodiak Island Borough Soil Profile
Soil Type
Silt Loam
Soil pH
5.1-6.5
Drainage
Well Drained
Plant Planting Risk Windows
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
Squash (Winter) Planting Timeline — Kodiak Island Borough, AK
Squash (Winter) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 8 | Apr 8 – Apr 22 |
| Transplant Outdoors | May 27 | May 27 – Jun 10 |
| Direct Sow | May 20 | May 20 – Jun 10 |
| Harvest | August 19 | Aug 19 – Oct 14 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
80–120 days
Soil pH
6 – 7
USDA Zone
Zone 6a
Growing Season
139 days
Growing Tips for Kodiak Island Borough
Direct sow after last frost on rich mounds. Allow ample space for sprawling vines. Cure harvested fruits in the sun for 10 days before storing in a cool, dry place.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
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Frequently Asked Questions
When should I plant Squash (Winter) in Kodiak Island Borough, AK?
Kodiak Island Borough is in Zone 6a with an average last frost of May 13. Plan your Squash (Winter) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Kodiak Island Borough, AK?
Kodiak Island Borough, Alaska is in USDA Hardiness Zone 6a. The average last spring frost is May 13 and first fall frost is September 29.
Plan Your Garden with Confidence
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