When can I plant Spearmint in Belleville, IL

One of the first steps we take when we are making a decision about our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

In Belleville you can estimate when you can plant spearmint by reviewing the USDA zone info.

Planting Calendar for Spearmint

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

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

A good time to plant spearmint
Possibly ok, but a risky time to plant spearmint
Probably not a good time to plant spearmint

The earliest that you can plant spearmint in Belleville 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. If you wait any later than that and your spearmint may not have a chance to really do well. Starting your spearmint indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Belleville the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Belleville is an average our actual date of last frost changes from year to year. Since half of the time in Belleville we get a frost after April 15 be ready to cover your spearmint in the event of a surprise late frost.

USDA Zone Info for Belleville

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-5°F
Highest Expected Low0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Belleville

You may be interested in our other planting guides for Belleville.