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.

In Duluth you can figure out when it's possible to plant swan river daisy by reviewing the USDA zone info.

Planting Calendar for Swan River Daisy

Frost tolerance for swan river daisy:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You can not plant swan river daisy until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant swan river daisy in Duluth 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. You probably don't want to wait any later than that or else your swan river daisy may not have a chance to really do well. Starting your swan river daisy indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Duluth. In the coldest months of winter you should expect an average low temperature of -30°F.

Since the USDA zone info for Duluth may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Duluth it frosts late in the year after May 15 be ready to cover your swan river daisy if you have a surprise late frost.

USDA Zone Info for Duluth

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Duluth

You may be interested in your other planting guides for Duluth.