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Planting calendar for ZIP 49002 (Portage, MI)

When to plant vegetables in Portage, MI (USDA hardiness zone 6a). Typical last spring frost around Apr 28, 2027 (±12 days year to year), first fall frost around Oct 18, 2027 (±12 days).

Playing it safe? Spring frost holds off until about May 13, 2027 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Portage, MI planting calendar for dates typical of the whole city.

Turn these dates into a plan: lay out your beds, place each crop on its sow and transplant dates, and get a reminder when it’s time. Free on one garden, no credit card.

Plan my garden for 49002

Month by month in Portage, MI

January

February

March

April

May

August

Understand your frost dates

Where these dates come from

Frost dates for ZIP 49002 come from NOAA 1991-2020 normals (USW00094815 KALAMAZOO BATTLE CK INTL AP, MI US). You can look up that station’s record yourself.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.