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 Lisle can be read to figure out when you can plant bee balm.

Planting Calendar for Bee Balm

Frost tolerance for bee balm:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Bee Balm do well in very little cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant bee balm in Lisle 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 bee balm and expect a good harvest is probably August. Any later than that and your bee balm may not have a chance to really do well. You can get started a little bit earlier by starting your bee balm indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Lisle. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Lisle is just an average the actual date of last frost is different every year. Since half of the time in Lisle there is a last frost after April 15 be ready to protect your bee balm if you have a late frost.

USDA Zone Info for Lisle

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 Lisle

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