The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant asparagus lettuce in Thief River Falls can be figured out by using the USDA zone info.

Planting Calendar for Asparagus lettuce

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

Asparagus lettuce require warm weather which means that it's necessary to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant asparagus lettuce in Thief River Falls is May. However, you really should wait until June 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. Any later than that and your asparagus lettuce may not have a chance to really do well. You can get started a few weeks earlier by starting your asparagus lettuce indoors.

Last Frost Date

In Thief River Falls the average date of last frost happens on May 15. It might get as low as -35°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Thief River Falls and it will vary from year to year. Since half of the time in Thief River Falls you get a frost after May 15 be ready to protect your asparagus lettuce if you have a late frost.

USDA Zone Info for Thief River Falls

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Thief River Falls

You may be interested in your other planting guides for Thief River Falls.