One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant spearmint in Mundelein should be determined by reviewing the USDA zone info.

Planting Calendar for Spearmint

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

Spearmint do well in cold which means that you can start planting them much earlier than plants that are more sensitive to the cold.

The earliest that you can plant spearmint in Mundelein 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 fully mature. Starting your spearmint indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Mundelein. In the coldest months of winter you should expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Mundelein is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Mundelein you get surprised by a frost after April 15 so make sure that you are ready to cover your spearmint if you have a late frost.

USDA Zone Info for Mundelein

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

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

Plants to Grow in Mundelein

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