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🍃 Growing Mint in Zone 1b

Zone 1b has harsh winters and a short growing season. Start Mint early indoors to maximize your harvest window. Last frost: May 25. First frost: Aug 28.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 30Aug 28

Season: May 25 – Aug 28 (95 days)

Zone1b

Last FrostMay 25

First FrostAug 28

Season Length95 days

Days to Harvest60

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing1/sqft (12" apart)

When to Plant Mint in Zone 1b

Start Seeds Indoors: Mar 30

Start Mint seeds indoors around Mar 30 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 10–16 days.

Transplant Outdoors: May 11

Transplant Mint seedlings outdoors after May 11. Wait until soil temperature reaches 50°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Jul 10

First harvest approximately Jul 10 (~60 days from transplant). Continue harvesting until first frost (Aug 28). Mint can overwinter in mild climates for continued harvest.

Companion Planting

✅ Cabbage✅ Tomatoes

❌ Chamomile

Mint in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Frequently Asked Questions

When should I plant Mint in Zone 1b?

Start Mint seeds indoors around Mar 30. Transplant outdoors after May 11. Expect first harvest around Jul 10.

What is the last frost date for Zone 1b?

The average last spring frost date for Zone 1b is May 25. The first fall frost averages Aug 28, giving a 95-day growing season.

Can I grow Mint in Zone 1b?

Yes. Mint needs 60 days to harvest. Zone 1b has a 95-day growing season, which is sufficient.

What is the best month to plant Mint in Zone 1b?

The best time to start Mint in Zone 1b is Mar. Begin seeds indoors around Mar 30, then transplant outdoors after the last frost date of May 25.

What companion plants grow well with Mint?

Good companion plants for Mint include Cabbage, Tomatoes. Avoid planting Mint near Chamomile.

How long does Mint take to harvest?

Mint takes approximately 60 days from planting to harvest. In Zone 1b, expect your first harvest around Jul 10.

Plan Your Mint Garden

Track Mint from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Mint Growing Guide