One of the first steps you take when you are figuring out 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 it's a good idea to plant bee balm by reviewing the USDA zone info for Delta.

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 do ok in moderate cold which means that you can start planting them slightly earlier than other frost tender plants.

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

Last Frost Date

The average date of last frost is April 15 in Delta. You should expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Delta is not always accurate the actual date of last frost is different every year. Half of the time in Delta there is a last frost after April 15 so make sure that you are prepared to cover your bee balm in the event of a late frost.

USDA Zone Info for Delta

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 Delta

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