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.

The first chance to plant brunfelsia in Riverside can be figured out by checking out the USDA zone info.

Planting Calendar for Brunfelsia

Frost tolerance for brunfelsia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's probably a bad idea to plant brunfelsia until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant brunfelsia in Riverside 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. You probably don't want to wait any later than that or else your brunfelsia may not have a chance to really do well. You can get started a little bit earlier by starting your brunfelsia indoors.

Last Frost Date

On average the last frost is on February 15 in Riverside. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Riverside may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Riverside last frost occurs after February 15 be ready to cover your brunfelsia in the event of one of those late frosts.

USDA Zone Info for Riverside

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 Riverside

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