One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for Sweetwater you should be able to figure out when it's the best time to plant lemon balm.

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.

Lemon balm can survive in some cold which means that you can plant them slightly earlier in the year than other plants that might not handle the cold.

The earliest that you can plant lemon balm in Sweetwater 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 little bit earlier.

Last Frost Date

In Sweetwater the average date of last frost happens on April 15. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Sweetwater may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Sweetwater you get a frost after April 15 so make sure that you are prepared to protect your lemon balm in the event of a late frost.

USDA Zone Info for Sweetwater

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

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

Plants to Grow in Sweetwater

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