The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Oroville should be reviewed to figure out when it's the best time to 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 can survive in a tiny bit of cold which means that you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant bee balm in Oroville 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. You probably don't want to wait any later than that or else your bee balm may not have a chance to grow to maturity. Starting your bee balm indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Oroville. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Oroville may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Oroville you get a frost after February 15 so just be sure to be ready to protect your bee balm if you have a late frost.

USDA Zone Info for Oroville

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 Oroville

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