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

In Rancho Cucamonga you can figure out when it's a good idea to plant chrysanthemums by looking at the USDA zone info.

Planting Calendar for Chrysanthemums

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

Since chrysanthemums are barely cold tolerant you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant chrysanthemums 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 chrysanthemums and expect a good harvest is probably September. If you wait any later than that and your chrysanthemums may not have a chance to fully mature. You can get started a little bit earlier by starting your chrysanthemums indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Rancho Cucamonga. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Rancho Cucamonga and it is different every year. Since half of the time in Rancho Cucamonga you get surprised by a frost after February 15 be ready to protect your chrysanthemums if you have 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.