Before planting it is a good idea to find your USDA Zone info to determine your garden 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 Monrovia should be reffered to in order to determine when it's possible to plant bougainvillea.

Planting Calendar for Bougainvillea

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

It's a bad idea to plant bougainvillea until after the last frost has passed because they are not cold tolerant.

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

Last Frost Date

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

Remember that USDA zone info for Monrovia may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Monrovia last frost occurs after January 31 so make sure that you are ready to cover your bougainvillea if you have a late frost.

USDA Zone Info for Monrovia

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 Monrovia

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