The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Rio Grande City you can figure out when it's possible to plant dusty miller by using 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 quite a bit earlier in the year because they do well in cold.

The earliest that you can plant dusty miller in Rio Grande City 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 grow to maturity. You can get started a little bit earlier by starting your dusty miller indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Rio Grande City. You should expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Rio Grande City is just an average and the actual date of last frost is different every year. Since half of the time in Rio Grande City it frosts late in the year after February 15 be ready to cover your dusty miller in the event of a late frost.

USDA Zone Info for Rio Grande City

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 Rio Grande City

You may be interested in your other planting guides for Rio Grande City.