One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for Menomonee Falls you should be able to determine when it's a good idea to plant bougainvillea.

Planting Calendar for Bougainvillea

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

Since bougainvillea do not do well in cold weather it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant bougainvillea in Menomonee Falls 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 April 15 in Menomonee Falls. In the coldest months of winter you can expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Menomonee Falls is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Menomonee Falls it frosts late in the year after April 15 be ready to cover your bougainvillea in the event of one of those late frosts.

USDA Zone Info for Menomonee Falls

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Menomonee Falls

You may be interested in your other planting guides for Menomonee Falls.