One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can estimate when it's possible to plant roses in Rancho Cucamonga by reviewing 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.

Roses are moderately cold tolerant which tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant roses in Rancho Cucamonga 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 grow to maturity. If you are starting your roses indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Rancho Cucamonga the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

It's important to remember that USDA zone info for Rancho Cucamonga is not always accurate and the actual date of last frost is different every year. Half of the time in Rancho Cucamonga you get surprised by a frost after February 15 so be sure to be ready to cover your roses in the event of a late frost.

USDA Zone Info for Rancho Cucamonga

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 Rancho Cucamonga

You may be interested in your other planting guides for Rancho Cucamonga.