One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Corona should be reffered to in order to figure out when it's the best time to plant brunfelsia.

Planting Calendar for Brunfelsia

Frost tolerance for brunfelsia:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Brunfelsia require warm weather which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant brunfelsia in Corona is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant brunfelsia and expect a good harvest is probably September. Any later than that and your brunfelsia may not have a chance to grow to maturity. Starting your brunfelsia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Corona is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Corona there is a last frost after February 15 so be sure to be ready to cover your brunfelsia in the event of a surprise late frost.

USDA Zone Info for Corona

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 Corona

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