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.

A way of getting a good idea when to plant spearmint is to check out the USDA zone info for Stephenville.

Planting Calendar for Spearmint

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

Since spearmint do well in cold you can plant them a lot earlier in the year than other frost tender plants.

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

The last month that you can plant spearmint and expect a good harvest is probably September. Any later than that and your spearmint may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your spearmint indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Stephenville. It might get as low as 10°F during the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Stephenville and it changes from year to year. Half of the time in Stephenville you get surprised by a frost after March 15 so make sure that you are ready to protect your spearmint if you have a surprise late frost.

USDA Zone Info for Stephenville

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Stephenville

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