One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when to plant painted tongues is to refer to the USDA zone info for Thief River Falls.

Planting Calendar for Painted Tongues

Frost tolerance for painted tongues:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's not a good idea to plant painted tongues until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant painted tongues 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 painted tongues and expect a good harvest is probably August. If you wait any later than that and your painted tongues may not have a chance to really do well. Starting your painted tongues indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Thief River Falls. You should expect an average low temperature of -35°F in the coldest months of winter.

It's important to remember that USDA zone info for Thief River Falls is just an average and the actual date of last frost will vary from year to year. Since half of the time in Thief River Falls there is a last frost after May 15 be ready to cover your painted tongues 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.