One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

One way of determining when you can plant string beans is to use the USDA zone info for Sioux Center.

Planting Calendar for String beans

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

String beans require warm weather which means that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant string beans in Sioux Center 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 string beans and expect a good harvest is probably August. If you wait any later than that and your string beans may not have a chance to really do well. You can get started a few weeks earlier by starting your string beans indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Sioux Center. You should expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Sioux Center may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Sioux Center you get a frost after April 15 so just be sure to be ready to protect your string beans in the event of a surprise late frost.

USDA Zone Info for Sioux Center

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 Sioux Center

You may be interested in your other planting guides for Sioux Center.