Minnesota Gardening Guide (2026)

Coldest mainland growing region; very short season. Start seeds indoors.

⏳ Garden countdownToday: Sep 25

USDA 2023 zones + NOAA 1991-2020 frost normals. Estimates — check your local forecast before planting.

USDA hardiness zone
3–5
Region
Midwest
Typical last spring frost
05/10
Typical first fall frost
09/25
Frost-free season
138 days
Lawn grass type
Cool-season

Quick answer (Minnesota): Most of the state gardens in USDA zones 3–5 with about a 138-day frost-free window. Plan around the typical last frost of 05/10; start warm-season crops indoors ~6 weeks earlier. Source: USDA Plant Hardiness Zone Map (2023) + state cooperative extension typical freeze dates.

Your Minnesota planting calendar

Pre-filled for Minnesota. Pick a crop to see indoor start, sow/transplant, and harvest dates you can print.

In Minnesota (typical zone 3–5), last frost ≈ May 10, first frost ≈ Sep 25 (138-day season), your Tomato plan:

Start seeds indoors
Mar 29
Sow / transplant outdoors
May 24
First harvest
Aug 2
Spacing / depth
24″ / 0.25″

Month-by-month (Minnesota, 2026)

MonthAction
Jan—
Feb—
MarStart indoors
Apr—
MaySow · Transplant
Jun—
Jul—
AugHarvest
Sep—
Oct—
Nov—
Dec—

Start indoors 6 weeks before last frost; transplant after soil warms. Zones 3–13 suitable. Dates are typical; confirm with your county extension and watch the 10-day forecast.

Lawns in Minnesota

Best grass types for your climate:

Kentucky BluegrassTall FescuePerennial RyegrassFine Fescue

Open the lawn care scheduler →

Common pests in Minnesota

The pests most reported in your region, with organic-first treatments:

CutwormAphidsCorn Earworm / Borer

Cutworm

Targets
Seedlings of many crops
Signs
Young transplants cut at soil line overnight.
Organic / IPM first
Cardboard collar around stem; diatomaceous earth ring; hand-pick at dusk.
Chemical option (follow label)
Bt or spinosad soil drench at planting.
Prevention
Till in fall; avoid fresh manure; start transplants sturdy.

What grows well in Minnesota

Crops suitable for zones 3–5:

CropTypeSpacingDays to harvest
TomatoWarm-season24″70
PepperWarm-season18″75
LettuceCool-season8″45
CarrotCool-season3″65
Green BeansWarm-season4″55
SpinachCool-season6″40
CucumberWarm-season12″55
ZucchiniWarm-season36″50
KaleCool-season12″55
BroccoliCool-season18″70

Figures are typical (30-year normals) from USDA and state extension services. Always confirm your local last/first freeze and product labels with your county extension before acting.

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