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When to Plant Alpine Strawberries in USDA Zone 4a

Zone 4a Zone 4a May

What to do in May

May is a pivotal month for Zone 4a gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 13
Avg. first frost September 28
Looking ahead to June
  • Transplants going out: alpine strawberries
Get the full Zone 4a Garden Planner — free →

Alpine strawberries are small, intensely flavored wild-type strawberries that fruit continuously from spring to frost. They do not produce runners and make excellent edging plants.

In Zone 4a, the average last spring frost is around May 6 and the first fall frost is around September 28, giving you a growing season of approximately 145 days.

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Zone 4a Short season
145 days
Last Spring Frost May 6
145 growing days
First Fall Frost September 28

Alpine Strawberries Planting Timeline — Zone 4a

Where Is USDA Zone 4a?

The map below highlights the states that contain Zone 4a. Click any state to see the Alpine Strawberries planting schedule for that location.

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

Alpine Strawberries Planting Calendar — Zone 4a

Activity When Date Range
Transplant Outdoors June 3 Jun 3 – Jun 17
Harvest September 2 Sep 2 – Oct 28

· 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 4a Planting Calendar PDF

Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 4a with start dates, transplant windows, and harvest times.

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Growing Conditions

Sun

Partial Shade (3-6 hours)

💧 Water

Moderate — regular watering

Days to Maturity

90–180 days

Soil pH

5.5 – 6.8

Zone Temperature Range

°F to °F average annual minimum

Growing Season

145 days (Zone average)

Planting Specifications

Plant Spacing12 inches apart
Row Spacing24 inches between rows

Growing Tips for Alpine Strawberries in Zone

Zone has a short growing season (~145 days). Start Alpine Strawberries indoors early and use season-extension techniques like row covers and cold frames.

Start seeds indoors 8-10 weeks before transplanting. Unlike regular strawberries, alpines do not spread by runners. Harvest tiny, intensely aromatic berries frequently. Grow well in partial shade.

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
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Saving Alpine 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 Alpine Strawberries in Zone 4a?

In Zone 4a, plan your Alpine Strawberries planting around the average last frost date of May 6. Transplant seedlings around June 3.

Can Alpine Strawberries grow in Zone 4a?

Yes, Alpine Strawberries can grow well in Zone 4a, hardy in USDA zones 3a through 10b. Zone 4a has a growing season of approximately 145 days, which is sufficient for Alpine Strawberries (90-180 days to maturity).

When can I harvest Alpine Strawberries in Zone 4a?

In Zone 4a, expect to harvest Alpine Strawberries from September 2 – October 28. Alpine Strawberries takes 90-180 days from planting to harvest.

What is the last frost date for Zone 4a?

The average last spring frost in Zone 4a is around May 6, and the first fall frost is around September 28. This gives a growing season of approximately 145 days. These are 50% probability dates — actual frost dates vary year to year.

What should I plant next to Alpine Strawberries?

Good companion plants for Alpine Strawberries include Borage, Lettuce, 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.

Instant PDF download. No spam, unsubscribe any time.

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.