The USDA Zone info is a great tool for gardeners to help us estimate 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.

It's a good idea to figure out when you can plant bougainvillea by using the USDA zone info for Oroville.

Planting Calendar for Bougainvillea

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

Since bougainvillea require warm weather you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant bougainvillea in Oroville 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. If you wait any later than that and your bougainvillea may not have a chance to really do well. You can get started a few weeks earlier by starting your bougainvillea indoors.

Last Frost Date

In Oroville the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Oroville is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Oroville it frosts late in the year after February 15 be ready to protect your bougainvillea in the event of a late frost.

USDA Zone Info for Oroville

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 Oroville

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