Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Rancho Santa Margarita you can determine when you can plant campanula by referring to the USDA zone info.

Planting Calendar for Campanula

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

Campanula do well in some cold which tells us that you can plant them a little earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant campanula in Rancho Santa Margarita 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 campanula and expect a good harvest is probably October. You probably don't want to wait any later than that or else your campanula may not have a chance to really do well. You can get started a couple of weeks earlier by starting your campanula indoors.

Last Frost Date

On average the last frost is on January 31 in Rancho Santa Margarita. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Rancho Santa Margarita is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Rancho Santa Margarita you get a frost after January 31 be ready to cover your campanula in the event of a late frost.

USDA Zone Info for Rancho Santa Margarita

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Rancho Santa Margarita

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