One of the best tools that you have as gardeners to help us determine 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.

A way of getting a good idea when it's possible to plant bee balm is to look at the USDA zone info for Covina.

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.

You can plant bee balm slightly earlier in the year because they do ok in moderate cold.

The earliest that you can plant bee balm in Covina 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 bee balm and expect a good harvest is probably September. Any later than that and your bee balm may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your bee balm indoors.

Last Frost Date

The average date of last frost is January 31 in Covina. You should expect an average low temperature of 30°F in the coldest months of winter.

It's important to remember that USDA zone info for Covina is an average and the actual date of last frost changes from year to year. Half of the time in Covina there is a last frost after January 31 so just be sure to be ready to protect your bee balm in the event of a surprise late frost.

USDA Zone Info for Covina

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Covina

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