Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when to plant lemon balm is to check out the USDA zone info for Snoqualmie.

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.

Lemon balm are one of those plants that can tolerate a tiny bit of cold weather which means that you can start planting them slightly earlier than other frost tender plants.

The earliest that you can plant lemon balm in Snoqualmie 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 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 March 15 in Snoqualmie. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Snoqualmie is not always accurate the actual date of last frost will vary from year to year. Half of the time in Snoqualmie last frost occurs after March 15 so be sure to be ready to cover your lemon balm in the event of a surprise late frost.

USDA Zone Info for Snoqualmie

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Snoqualmie

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