The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Tempe it's possible to estimate when it's a good idea to plant dusty miller.

Planting Calendar for Dusty Miller

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

Dusty Miller are very cold tolerant which means that you can get them planted much earlier than more sensitive plants.

The earliest that you can plant dusty miller in Tempe is January. However, you really should wait until February 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 October. Any later than that and your dusty miller may not have a chance to fully mature. You can get started a little bit earlier by starting your dusty miller indoors.

Last Frost Date

The average date of last frost is February 15 in Tempe. You can expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that USDA zone info for Tempe may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Tempe last frost occurs after February 15 be ready to cover your dusty miller if you have one of those late frosts.

USDA Zone Info for Tempe

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

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

Plants to Grow in Tempe

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