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When to Plant Strawberries in USDA Zone 3b

Zone 3b Zone 3b May

Top priorities for Zone 3b gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Zone 3b.

Avg. last frost May 16
Avg. first frost September 22
Get ahead of June
  • Transplants going out: strawberries
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Strawberries

Strawberries are a beloved perennial fruit available as June-bearing, ever-bearing, and day-neutral types. They are one of the easiest fruits to grow in containers or garden beds.

In Zone 3b, the average last spring frost is around May 10 and the first fall frost is around September 22, giving you a growing season of approximately 135 days.

Zone 3b Short season
135 days
Last Spring Frost May 10
135 growing days
First Fall Frost September 22

Strawberries Planting Timeline — Zone 3b

Where Is USDA Zone 3b?

The map below highlights the states that contain Zone 3b. Click any state to see the Strawberries planting schedule for that location.

Prints a clean, ink-friendly version without maps or navigation.

Strawberries Planting Calendar — Zone 3b

Activity When Date Range
Transplant Outdoors June 7 Jun 7 – Jun 21
Harvest September 6 Sep 6 – Oct 11

· 12" apart · Rows 24" apart

Month-by-Month Timeline

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

Free Zone 3b Planting Calendar PDF

Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 3b with start dates, transplant windows, and harvest times.

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Growing Conditions

Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Moderate — regular watering

Days to Maturity

90–365 days

Soil pH

5.5 – 6.8

Zone Temperature Range

°F to °F average annual minimum

Growing Season

135 days (Zone average)

Planting Specifications

Plant Spacing12 inches apart
Row Spacing24 inches between rows

Recommended Strawberries Varieties for Zone

June-bearing varieties for northern zones

Sparkle Jewel Earliglow

Growing Tips for Strawberries in Zone

Zone has a short growing season (~135 days). Start Strawberries indoors early and use season-extension techniques like row covers and cold frames.

Plant with crowns at soil level. Remove runners the first year to strengthen plants. Mulch with straw to keep fruit clean and suppress weeds. Renovate June-bearing beds after harvest.

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Broccoli
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Saving Strawberries Seeds

Recommended for Your Garden

✂️
Pruning Shears $12-30

Sharp bypass pruners for clean cuts on fruit trees, berry bushes, and woody herbs.

🌱
Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

🧪
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

Related Plants

Frequently Asked Questions

When should I plant Strawberries in Zone 3b?

In Zone 3b, plan your Strawberries planting around the average last frost date of May 10. Transplant seedlings around June 7.

Can Strawberries grow in Zone 3b?

Yes, Strawberries can grow well in Zone 3b, hardy in USDA zones 3a through 10b. Zone 3b has a growing season of approximately 135 days, which is sufficient for Strawberries (90-365 days to maturity).

When can I harvest Strawberries in Zone 3b?

In Zone 3b, expect to harvest Strawberries from September 6 – October 11. Strawberries takes 90-365 days from planting to harvest.

What is the last frost date for Zone 3b?

The average last spring frost in Zone 3b is around May 10, and the first fall frost is around September 22. This gives a growing season of approximately 135 days. These are 50% probability dates — actual frost dates vary year to year.

What should I plant next to Strawberries?

Good companion plants for Strawberries include Borage, Lettuce, Spinach, Thyme. These companions can help with pest control, pollination, and nutrient sharing.

🌱

Your Free Printable Garden Planner

A 24-page printable planner tailored to your zone. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Planting dates are estimates based on average frost dates — local conditions may vary. Last updated: May 2026.

Sources & credits

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