One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Columbus you can determine when it's possible to plant dusty miller by looking at the USDA zone info.

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 a lot earlier in the year because they are very cold tolerant.

The earliest that you can plant dusty miller in Columbus 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. You probably don't want to wait any later than that or else your dusty miller may not have a chance to really do well. If you are starting your dusty miller indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Columbus. You can expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Columbus may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Columbus it frosts late in the year after April 15 be ready to protect your dusty miller if you have one of those late frosts.

USDA Zone Info for Columbus

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Columbus

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