Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Bothell you can determine when you can plant bougainvillea by looking at the USDA zone info.

Planting Calendar for Bougainvillea

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

You can not plant bougainvillea until after the last frost has passed because they require warm weather.

The earliest that you can plant bougainvillea in Bothell 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. You probably don't want to wait any later than that or else your bougainvillea may not have a chance to grow to maturity. Starting your bougainvillea indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Bothell may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Bothell last frost occurs after March 15 so make sure that you are prepared to protect your bougainvillea in the event of a surprise late frost.

USDA Zone Info for Bothell

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 Bothell

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