Before planting it is a good idea to find your USDA Zone info to figure out 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.

One way of determining when it's the best time to plant dusty miller is to refer to the USDA zone info for Bonne Terre.

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 very cold tolerant.

The earliest that you can plant dusty miller in Bonne Terre is February. However, you really should wait until March 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 September. If you wait any later than that and your dusty miller may not have a chance to really do well. You can get started a few weeks earlier by starting your dusty miller indoors.

Last Frost Date

On average the last frost is on April 15 in Bonne Terre. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Bonne Terre is an average the actual date of last frost changes from year to year. Since half of the time in Bonne Terre there is a last frost after April 15 be ready to protect your dusty miller in the event of a surprise late frost.

USDA Zone Info for Bonne Terre

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Bonne Terre

You may be interested in your other planting guides for Bonne Terre.