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

A common way of getting a good idea when you can plant bougainvillea is to look at the USDA zone info for Lake Stevens.

Planting Calendar for Bougainvillea

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

Since bougainvillea are not cold tolerant you really should wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant bougainvillea in Lake Stevens 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 couple of weeks earlier by starting your bougainvillea indoors.

Last Frost Date

The average date of last frost is March 15 in Lake Stevens. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Lake Stevens may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Lake Stevens you get a frost after March 15 be ready to cover your bougainvillea in the event of a surprise late frost.

USDA Zone Info for Lake Stevens

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 Lake Stevens

You may be interested in your other planting guides for Lake Stevens.