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 USDA zone info for Nampa can be reviewed to determine when it's a good idea to plant lemon balm.

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.

Since lemon balm are barely cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant lemon balm in Nampa 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 grow to maturity. Starting your lemon balm indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Nampa. You can expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Nampa may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Nampa you get a frost after April 15 so just be sure to be ready to protect your lemon balm if you have one of those late frosts.

USDA Zone Info for Nampa

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 Low	0°F
Highest Expected Low	5°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 Nampa

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