The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 Tucson can be used to estimate when it's possible to plant brunfelsia.

Planting Calendar for Brunfelsia

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

You can not plant brunfelsia until after the last frost because they do not do well in cold weather.

The earliest that you can plant brunfelsia in Tucson 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 fully mature. You can get started a few weeks earlier by starting your brunfelsia indoors.

Last Frost Date

In Tucson 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.

Just be sure to remember that USDA zone info for Tucson is an average and the actual date of last frost will vary from year to year. Half of the time in Tucson you get a frost after February 15 so make sure that you are prepared to cover your brunfelsia if you have a surprise late frost.

USDA Zone Info for Tucson

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 Tucson

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