The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to determine when you can plant snap beans by using the USDA zone info for Sun Prairie.

Planting Calendar for Snap beans

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

You really shouldn't plant snap beans until after all chance of frost has passed because they are not cold tolerant.

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

Last Frost Date

On average the last frost has passed is on April 15 in Sun Prairie. You should expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Sun Prairie is an average the actual date of last frost is different every year. Half of the time in Sun Prairie you get surprised by a frost after April 15 so make sure that you are prepared to cover your snap beans if you have one of those late frosts.

USDA Zone Info for Sun Prairie

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Sun Prairie

You may be interested in your other planting guides for Sun Prairie.