The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Sheridan can be reviewed to determine when it's the best time to plant thyme.

Planting Calendar for Thyme

Frost tolerance for thyme:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant thyme a lot earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant thyme in Sheridan is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant thyme and expect a good harvest is probably August. If you wait any later than that and your thyme may not have a chance to really do well. Starting your thyme indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Sheridan. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Sheridan is an average the actual date of last frost changes from year to year. Since half of the time in Sheridan you get a frost after May 15 be ready to protect your thyme if you have one of those late frosts.

USDA Zone Info for Sheridan

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Sheridan

You may be interested in your other planting guides for Sheridan.