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🍃 Growing Mint in Zone 12b

Zone 12b has a year-round growing season. Mint can be planted almost any time with proper planning. Last frost: Jan 1. First frost: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Nov 6Dec 31

Season: Jan 1 – Dec 31 (364 days)

Zone12b

Last FrostJan 1

First FrostDec 31

Season Length364 days

Days to Harvest60

SunPart Sun / Part Shade

Frost ToleranceHeavy

Spacing1/sqft (12" apart)

When to Plant Mint in Zone 12b

Start Seeds Indoors: Nov 6

Start Mint seeds indoors around Nov 6 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 10–16 days.

Transplant Outdoors: Dec 18

Transplant Mint seedlings outdoors after Dec 18. Wait until soil temperature reaches 50°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Feb 16

First harvest approximately Feb 16 (~60 days from transplant). Continue harvesting until first frost (Dec 31). 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 12b?

Start Mint seeds indoors around Nov 6. Transplant outdoors after Dec 18. Expect first harvest around Feb 16.

What is the last frost date for Zone 12b?

The average last spring frost date for Zone 12b is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Mint in Zone 12b?

Yes. Mint needs 60 days to harvest. Zone 12b has a 364-day growing season, which is sufficient.

What is the best month to plant Mint in Zone 12b?

The best time to start Mint in Zone 12b is Nov. Begin seeds indoors around Nov 6, then transplant outdoors after the last frost date of Jan 1.

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 12b, expect your first harvest around Feb 16.

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