Alaska · zones 3a–8a
When to plant cucumbers in Alaska.
Sow between May 19 to Aug 18 in a typical year, keyed to Alaska's median last frost around May 12. A second, fall sowing fits May 15 to Jun 15. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Cucumbers dates for a typical Alaska season.
Direct sow
May 19 to Aug 18
Keyed to the ~May 12 last frost. Sow 1" deep, 12" apart.
Fall round
May 15 to Jun 15
Counted back from the ~Sep 15 first frost.
Harvest
~60 days later
~5 lb per plant over ~5 weeks.
Alaska spans more than one climate: Zone 3 is the most common zone, but the state runs 3a to 8a. That's why the planner works from your ZIP code's frost dates, not your zone — mountain and coastal gardens in the same state can be three weeks apart.