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.

You should be able to determine when it's a good idea to plant browallia by looking at the USDA zone info for Patterson.

Planting Calendar for Browallia

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

Since browallia require warm weather it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant browallia in Patterson 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 browallia and expect a good harvest is probably September. If you wait any later than that and your browallia may not have a chance to fully mature. Starting your browallia indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Patterson. In the coldest months of winter you should expect an average low temperature of 20°F.

Since the USDA zone info for Patterson may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Patterson there is a last frost after February 15 so just be sure to be ready to protect your browallia in the event of one of those late frosts.

USDA Zone Info for Patterson

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Patterson

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