When can I plant Bougainvillea in Zone 1b

Before planting it is a good idea to find our USDA Zone info to determine our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

The USDA zone info for Zone 1b can be used to estimate when you can plant bougainvillea.


Planting Calendar for Bougainvillea

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

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

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant bougainvillea
Possibly ok, but a risky time to plant bougainvillea
Probably not a good time to plant bougainvillea

The earliest that you can plant bougainvillea in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant bougainvillea and expect a good harvest is probably July. 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 few weeks earlier by starting your bougainvillea indoors.

Last Frost Date

On average the last frost is on June 15 in Zone 1b. It might get as low as -55°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 1b is just an average and our actual date of last frost is different every year. Since half of the time in Zone 1b there is a last frost after June 15 be ready to protect your bougainvillea in the event of a late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.