The USDA Zone info is a great tool for gardeners to help us determine 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.

A common way of getting a good idea when it's possible to plant angel's trumpets is to use the USDA zone info for Rancho Cucamonga.

Planting Calendar for Angel's Trumpets

Frost tolerance for angel's trumpets:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Angel's Trumpets do ok in moderate cold which tells us that you can start planting them slightly earlier than other frost tender plants.

The earliest that you can plant angel's trumpets in Rancho Cucamonga 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 angel's trumpets and expect a good harvest is probably September. If you wait any later than that and your angel's trumpets may not have a chance to really do well. You can get started a couple of weeks earlier by starting your angel's trumpets indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Rancho Cucamonga 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 Rancho Cucamonga you get a frost after February 15 be ready to protect your angel's trumpets in the event of one of those late frosts.

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.