When should I plant Thyme in Zone 1b?

Start Thyme seeds indoors around Mar 30. Transplant outdoors after May 18. Expect first harvest around Jul 17.

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 Thyme in Zone 1b?

Yes. Thyme needs 80 days to harvest. Zone 1b has a 95-day growing season, which is sufficient.

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🌿 Growing Thyme in Zone 1b

Zone 1b has harsh winters and a short growing season. Start Thyme 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 Harvest80

SunFull Sun

Frost ToleranceModerate

Spacing4/sqft (6" apart)

When to Plant Thyme in Zone 1b

Start Seeds Indoors: Mar 30

Start Thyme seeds indoors around Mar 30 (8 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 14–21 days.

Transplant Outdoors: May 18

Transplant Thyme seedlings outdoors after May 18. Wait until soil temperature reaches 50°F. Space plants at 4/sqft (6" apart). Harden off plants for a week before moving outside.

Harvest: Jul 17

First harvest approximately Jul 17 (~60 days from transplant). Continue harvesting until first frost (Aug 28). Thyme can overwinter in mild climates for continued harvest.

Companion Planting

✅ Cabbage ✅ Eggplant✅ Strawberries✅ Tomatoes✅ Potatoes

Thyme 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 Thyme Garden

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

Start Free Thyme Growing Guide