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

In Murphysboro you can determine when it's a good idea to plant lemon balm by looking at the USDA zone info.

Planting Calendar for Lemon balm

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

Since lemon balm do ok in moderate cold you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant lemon balm in Murphysboro 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 lemon balm and expect a good harvest is probably August. You probably don't want to wait any later than that or else your lemon balm may not have a chance to fully mature. Starting your lemon balm indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Murphysboro. In the coldest months of winter you should expect an average low temperature of -5°F.

Since the USDA zone info for Murphysboro is an average the actual date of last frost changes from year to year. Since half of the time in Murphysboro there is a last frost after April 15 be ready to protect your lemon balm if you have a late frost.

USDA Zone Info for Murphysboro

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 Low	0°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 Murphysboro

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