One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

One way of determining when it's possible to plant asparagus lettuce is to check out the USDA zone info for Spirit Lake.

Planting Calendar for Asparagus lettuce

Frost tolerance for asparagus lettuce:	Not tolerant of frost.
When to plant:	After the last frost.

It's not a good idea to plant asparagus lettuce until after the last frost because they require warm weather.

The earliest that you can plant asparagus lettuce in Spirit Lake 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 asparagus lettuce and expect a good harvest is probably August. You probably don't want to wait any later than that or else your asparagus lettuce may not have a chance to fully mature. Starting your asparagus lettuce indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Spirit Lake. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Spirit Lake is an average the actual date of last frost will vary from year to year. Since half of the time in Spirit Lake there is a last frost after April 15 be ready to protect your asparagus lettuce in the event of one of those late frosts.

USDA Zone Info for Spirit Lake

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

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

Plants to Grow in Spirit Lake

You may be interested in your other planting guides for Spirit Lake.