One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for San Luis Obispo can be looked at 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.

Since brunfelsia do not do well in cold weather you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant brunfelsia in San Luis Obispo 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. If you wait any later than that and your brunfelsia may not have a chance to really do well. If you are starting your brunfelsia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In San Luis Obispo the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for San Luis Obispo is an average the actual date of last frost is different every year. Half of the time in San Luis Obispo last frost occurs after February 15 so make sure that you are ready to protect your brunfelsia in the event of one of those late frosts.

USDA Zone Info for San Luis Obispo

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 San Luis Obispo

You may be interested in your other planting guides for San Luis Obispo.