Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when it's possible to plant swan river daisy is to examine the USDA zone info for Thief River Falls.

Planting Calendar for Swan River Daisy

Frost tolerance for swan river daisy:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant swan river daisy until after the last frost has passed because they require warm weather.

The earliest that you can plant swan river daisy 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 swan river daisy and expect a good harvest is probably August. Any later than that and your swan river daisy may not have a chance to fully mature. You can get started a little bit earlier by starting your swan river daisy indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Thief River Falls is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Thief River Falls there is a last frost after May 15 be ready to protect your swan river daisy in the event of 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.