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.

You can figure out when it's possible to plant myosotis in Thief River Falls by reviewing the USDA zone info.

Planting Calendar for Myosotis

Frost tolerance for myosotis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since myosotis are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant myosotis in Thief River Falls 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 myosotis and expect a good harvest is probably August. Any later than that and your myosotis may not have a chance to fully mature. You can get started a few weeks earlier by starting your myosotis indoors.

Last Frost Date

On average the last frost is on May 15 in Thief River Falls. In the coldest months of winter you can expect an average low temperature of -35°F.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Thief River Falls and it can change quite a bit from year to year. Half of the time in Thief River Falls you get a frost after May 15 so just be sure to be ready to cover your myosotis in the event of one of those late frosts.

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.