One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to determine when you can plant lemon balm by reviewing the USDA zone info for El Mirage.

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 are barely cold tolerant which means that you can start planting them slightly earlier than more sensitive plants.

The earliest that you can plant lemon balm in El Mirage 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 lemon balm and expect a good harvest is probably September. If you wait any later than that and your lemon balm may not have a chance to really do well. You can get started a few weeks earlier by starting your lemon balm indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in El Mirage. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for El Mirage is just an average the actual date of last frost is different every year. Since half of the time in El Mirage you get a frost after February 15 be ready to cover your lemon balm if you have a late frost.

USDA Zone Info for El Mirage

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in El Mirage

You may be interested in your other planting guides for El Mirage.