The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 Vista should be read to determine when it's the best time to plant browallia.

Planting Calendar for Browallia

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

Since browallia do not do well in cold weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant browallia in Vista is February. However, you really should wait until March 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. You probably don't want to wait any later than that or else your browallia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your browallia indoors.

Last Frost Date

The average date of last frost is January 31 in Vista. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Vista may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Vista last frost occurs after January 31 so make sure that you are prepared to protect your browallia if you have one of those late frosts.

USDA Zone Info for Vista

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Vista

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