The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when to plant bower vine in Missoula by using the USDA zone info.

Planting Calendar for Bower Vine

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

Bower Vine require warm weather which means that it's important to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant bower vine in Missoula 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 bower vine and expect a good harvest is probably August. Any later than that and your bower vine may not have a chance to grow to maturity. Starting your bower vine indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Missoula. In the coldest months of winter you should expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Missoula is an average and the actual date of last frost will vary from year to year. Half of the time in Missoula it frosts late in the year after April 15 so make sure that you are ready to protect your bower vine if you have a late frost.

USDA Zone Info for Missoula

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 Missoula

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