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

A way of estimating when to plant bower vine is to look at the USDA zone info for Wyoming.

Planting Calendar for Bower Vine

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

Since bower vine are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant bower vine in Wyoming 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. You probably don't want to wait any later than that or else your bower vine may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your bower vine indoors.

Last Frost Date

In Wyoming the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Wyoming is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Wyoming there is a last frost after April 15 be ready to cover your bower vine if you have a surprise late frost.

USDA Zone Info for Wyoming

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 Wyoming

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