One of the first steps you take when you are estimating your gardening schedule is find your 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.

The best time to plant bougainvillea in Suisun City can be estimated by reviewing the USDA zone info.

Planting Calendar for Bougainvillea

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

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

The earliest that you can plant bougainvillea in Suisun City 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 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 fully mature. You can get started a couple of weeks earlier by starting your bougainvillea indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Suisun City. You can expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Suisun City and it can change quite a bit from year to year. Half of the time in Suisun City you get a frost after February 15 so make sure that you are prepared to cover your bougainvillea if you have one of those late frosts.

USDA Zone Info for Suisun City

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 Suisun City

You may be interested in your other planting guides for Suisun City.