One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant roses in Sonora should be figured out by looking at the USDA zone info.

Planting Calendar for Roses

Frost tolerance for roses:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant roses a little earlier in the year because they are moderately cold tolerant.

The earliest that you can plant roses in Sonora 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 roses and expect a good harvest is probably October. If you wait any later than that and your roses may not have a chance to really do well. Starting your roses indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Sonora. In the coldest months of winter you should expect an average low temperature of 20°F.

Just be sure to remember that USDA zone info for Sonora is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Sonora it frosts late in the year after February 15 be ready to protect your roses if you have a surprise late frost.

USDA Zone Info for Sonora

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Sonora

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