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

One way of getting a good idea when you can plant dusty miller is to check out the USDA zone info for International Falls.

Planting Calendar for Dusty Miller

Frost tolerance for dusty miller:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant dusty miller earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant dusty miller in International 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 dusty miller and expect a good harvest is probably August. You probably don't want to wait any later than that or else your dusty miller may not have a chance to fully mature. If you are starting your dusty miller indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In International Falls the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -40°F.

Since the USDA zone info for International Falls is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in International Falls you get a frost after May 15 be ready to cover your dusty miller if you have a late frost.

USDA Zone Info for International Falls

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-40°F
Highest Expected Low	-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in International Falls

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