Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant lemon balm in Potsdam should be determined by referring to the USDA zone info.

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.

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

The earliest that you can plant lemon balm in Potsdam is April. However, you really should wait until May 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 August. Any later than that and your lemon balm may not have a chance to really do well. You can get started a couple of weeks earlier by starting your lemon balm indoors.

Last Frost Date

On average the last frost is on May 15 in Potsdam. In the coldest months of winter you should expect an average low temperature of -25°F.

It's important to remember that USDA zone info for Potsdam is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Potsdam you get a frost after May 15 be ready to protect your lemon balm in the event of a surprise late frost.

USDA Zone Info for Potsdam

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Potsdam

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