When to Plant Bee Balm in Darby, PA

One of the first steps you take when you are making a decision about your gardening schedule is find your 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.

You can figure out when you can plant bee balm in Darby by referring to the USDA zone info.


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.

Since bee balm are one of those plants that can tolerate a tiny bit of cold weather you can plant them a bit earlier in the year than more sensitive plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant bee balm
Possibly ok, but a risky time to plant bee balm
Probably not a good time to plant bee balm

The earliest that you can plant bee balm in Darby 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. Any later than that and 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

In Darby the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of 0°F.

Since the USDA zone info for Darby is not always accurate the actual date of last frost will vary from year to year. Half of the time in Darby you get surprised by a frost after April 15 so be sure to be ready to cover your bee balm if you have a late frost.

USDA Zone Info for Darby

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 Low0°F
Highest Expected Low5°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 Darby

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