When to Plant Leeks in Haines Borough, AK
Leeks are a mild, sweet allium that produces long white shanks. They are more refined than onions and are a key ingredient in soups, stews, and gratins.
Haines Borough, Alaska is in USDA Zone 6a. The average last spring frost is May 7 and the first fall frost is September 29, giving you a growing season of approximately 145 days.
At an elevation of 1,921 feet, Haines Borough receives approximately 57.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 68°F, so choose short-season varieties of Leeks to ensure they mature before fall. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.
Haines Borough Soil Profile
Soil Type
Silt Loam
Soil pH
4.9-6.4
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
Leeks Planting Timeline — Haines Borough, AK
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 2 | Apr 2 – Apr 16 |
| Transplant Outdoors | May 7 | May 7 – May 21 |
| Direct Sow | April 23 | Apr 23 – May 14 |
| Fall Sowing | July 21 | Jul 21 – Aug 4 |
| Harvest | August 6 | Aug 6 – Oct 22 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
90–150 days
Soil pH
6 – 7
USDA Zone
Zone 6a
Growing Season
145 days
Growing Tips for Haines Borough
Start seeds indoors 10-12 weeks before last frost. Transplant into trenches and hill soil around stems as they grow to increase the white portion. Harvest as needed.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Leeks in Other Locations
Frequently Asked Questions
When should I plant Leeks in Haines Borough, AK?
Haines Borough is in Zone 6a with an average last frost of May 7. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Haines Borough, AK?
Haines Borough, Alaska is in USDA Hardiness Zone 6a. The average last spring frost is May 7 and first fall frost is September 29.
Plan Your Garden with Confidence
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