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Copper Center, AK planting calendar

When to plant vegetables in Copper Center, AK (USDA hardiness zone 4b). Typical last spring frost around Jun 7, 2026 16 days year to year), first fall frost around Aug 21, 202610 days).

Playing it safe? Spring frost holds off until about Jun 27, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

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Month by month in Copper Center, AK

March

April

May

June

July

Understand your frost dates

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ZIP codes in Copper Center

99573

Frost dates are NOAA 1991–2020 climate normals for a representative location in Copper Center, AK (covering 1 ZIP); your exact dates depend on your address. Schedules are guidance, not guarantees.