The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant bougainvillea in Issaquah can be determined by referring to the USDA zone info.

Planting Calendar for Bougainvillea

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

Bougainvillea do not do well in cold weather which means that you need to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant bougainvillea in Issaquah is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant bougainvillea and expect a good harvest is probably August. Any later than that and your bougainvillea may not have a chance to really do well. You can get started a little bit earlier by starting your bougainvillea indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Issaquah. It might get as low as 15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Issaquah is not always accurate and the actual date of last frost changes from year to year. Half of the time in Issaquah it frosts late in the year after March 15 so just be sure to be ready to protect your bougainvillea in the event of one of those late frosts.

USDA Zone Info for Issaquah

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Issaquah

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