When should I plant Mint in Zone 5b?

Start Mint seeds indoors around Mar 3. Transplant outdoors after Apr 14. Expect first harvest around Jun 13.

What is the last frost date for Zone 5b?

The average last spring frost date for Zone 5b is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Mint in Zone 5b?

Yes. Mint needs 60 days to harvest. Zone 5b has a 163-day growing season, which is sufficient.

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🍃 Growing Mint in Zone 5b

Zone 5b has cold winters and a moderate growing season. Timing is key for Mint in this zone. Last frost: Apr 28. First frost: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 3Oct 8

Season: Apr 28 – Oct 8 (163 days)

Zone5b

Last FrostApr 28

First FrostOct 8

Season Length163 days

Days to Harvest60

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing1/sqft (12" apart)

When to Plant Mint in Zone 5b

Start Seeds Indoors: Mar 3

Start Mint seeds indoors around Mar 3 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 10–16 days.

Transplant Outdoors: Apr 14

Transplant Mint seedlings outdoors after Apr 14. Wait until soil temperature reaches 50°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Jun 13

First harvest approximately Jun 13 (~60 days from transplant). Continue harvesting until first frost (Oct 8). 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

Plan Your Mint Garden

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

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