Thyme plant

When to plant thyme in zone 3b

In zone 3b, the last spring frost usually comes around May 15 and the first fall frost around Sep 15. Here is when to plant thyme.

Note: winters in zone 3b are usually too cold for thyme to survive outdoors. Grow it in a large pot and move it into a garage or indoors for winter.

Start seeds indoorsMar 20
Plant in the bedMay 15
Start pickingJul 24

Your thyme calendar for zone 3b

Likes it on the dry side. Plant near the edge of the bed.

Spacing in a raised bed: 4 plants per square foot.

These dates are estimates from the average frost dates for zone 3b. Your local frost dates may be a week or two different. If a late cold snap is forecast, wait a few days.

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Thyme in other zones

See everything to plant in zone 3b →