Before planting it is a good idea to find your USDA Zone info to estimate 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.

The USDA zone info for Wyoming should be read to determine when it's the best time to plant runner beans.

Planting Calendar for Runner beans

Frost tolerance for runner beans:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably a bad idea to plant runner beans until after the last frost because they do not do well in cold weather.

The earliest that you can plant runner beans 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 runner beans and expect a good harvest is probably August. You probably don't want to wait any later than that or else your runner beans may not have a chance to really do well. Starting your runner beans indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Wyoming. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Wyoming is not always accurate the actual date of last frost changes from year to year. Since half of the time in Wyoming you get surprised by a frost after April 15 be ready to cover your runner beans 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.