Alaska · zones 3a–8a
When to plant cucumbers in Alaska.
Sow between May 19 to Jun 29 in a typical year, keyed to Alaska's median last frost around May 12. 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 Jun 29
Keyed to the ~May 12 last frost. Sow 1" deep, 12" apart.
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.
In Alaska: watch for
The pests that find cucumbers here.
The short season here, about 126 frost-free days, keeps cucumber, slicing in front of squash bugs only briefly. One early row cover usually carries a planting through the worst of it.
Gray shield bugs; leaves wilt and get crispy patches.
Organic fix: Crush the copper egg rows under leaves; diatomaceous earth at the base.
Yellow striped or spotted beetles that spread bacterial wilt.
Organic fix: Row cover until the first female flowers open; neem for heavy runs.
Angular yellow patches bounded by the leaf veins, after wet foliage.
Organic fix: Water in the morning, space for airflow, pull badly infected vines.
White powder coating the leaves late in the season.
Organic fix: Space for airflow, water at the base, spray neem.
Your season math: Alaska gives cucumbers about 126 frost-free days, and it needs roughly 60 days to a first harvest. That fits about 4 re-sown rounds across the season, so you can keep it coming instead of picking once.
Planting cucumbers in Alaska: questions
When should I plant cucumbers in Alaska?+
In a typical Alaska year, sow cucumbers between May 19 to Jun 29, keyed to the state's median last frost around May 12. Your exact dates shift with your ZIP code and microclimate.
What USDA zone is Alaska?+
Alaska spans zones 3a–8a, mostly zone 3. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many cucumbers plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.