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When to plant Zucchini in Aitkin County, MN

In Aitkin County, Zucchini is a spring-only crop. Plant May 23–June 13 once soil hits 50°F.

When to Plant Zucchini in Aitkin County, MN

Zucchini

Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

Aitkin County, Minnesota is in USDA Zone 4a. The average last spring frost is May 9 and the first fall frost is October 3, giving you a growing season of approximately 147 days.

At an elevation of 1,188 feet, Aitkin County receives approximately 35 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Zucchini to ensure they mature before fall.

Aitkin County, MN (Zone 4a) Short season
147 days
Last Spring Frost May 9
147 growing days
First Fall Frost October 3

Aitkin County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

How Much Zucchini to Grow

6-10 lbs
Average yield per plant
1
Plants per person
2 sq ft
Space per person

For a family of 4, plant approximately 4 zucchini plants in about 8 sq ft. In Aitkin County's 147-day season, you'll have plenty of time for a full harvest. Plan your garden layout →

Zucchini Planting Timeline — Aitkin County, MN

Zucchini Planting Calendar

Activity When Date Range
Start Indoors March 28 Mar 28 – Apr 11
Transplant Outdoors May 30 May 30 – Jun 13
Direct Sow May 23 May 23 – Jun 13
Harvest July 18 Jul 18 – Sep 12

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors
May Transplant Outdoors Direct Sow
June Transplant Outdoors Direct Sow
July Harvest
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: N/A

🗺️ USDA Zone

Zone 4a

📆 Growing Season

147 days in Aitkin County

Growing Tips for Aitkin County

Direct sow after last frost. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zucchini in Aitkin County, MN?

Aitkin County is in Zone 4a with an average last frost of May 9. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Aitkin County, MN?

Aitkin County, Minnesota is in USDA Hardiness Zone 4a. The average last spring frost is May 9 and first fall frost is October 3.

When should I plant Zucchini in Aitkin County, MN?

In Aitkin County, MN, plant Zucchini after the last frost (around May 9) and before the first frost (around October 3). Best results when soil holds above 50°F.

What growing zone is Aitkin County, MN for Zucchini?

Aitkin County sits in USDA Zone 4a. Zucchini grows reliably in zones 3a through 11b, so it's a good fit here.

Can Zucchini grow in Aitkin County's climate?

Yes — Zucchini grows well in Aitkin County's temperate climate. Aitkin County averages a 147-day frost-free season, with last frost around May 9 and first frost around October 3.

🌱

Your Aitkin County Garden Planner — Free

A 22-page printable planner built for Aitkin County (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Aitkin County, MN. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.