One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of getting a good idea when it's a good idea to plant bougainvillea is to examine the USDA zone info for Fontana.

Planting Calendar for Bougainvillea

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

Bougainvillea require warm weather which tells us that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant bougainvillea in Fontana 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 bougainvillea and expect a good harvest is probably September. You probably don't want to wait any later than that or else your bougainvillea may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your bougainvillea indoors.

Last Frost Date

On average the last frost is on January 31 in Fontana. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Fontana may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Fontana you get surprised by a frost after January 31 so always be ready to protect your bougainvillea in the event of a late frost.

USDA Zone Info for Fontana

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 Fontana

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