One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Decatur it's possible to estimate when it's possible to plant string beans.

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 are not cold tolerant which means that it's important to wait until it warms up after the last frost before you can plant them.

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

Last Frost Date

On average all chance of frost has passed is on April 15 in Decatur. It might get as low as -15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Decatur is not always accurate and the actual date of last frost is different every year. Half of the time in Decatur you get surprised by a frost after April 15 so be sure to be ready to cover your string beans if you have one of those late frosts.

USDA Zone Info for Decatur

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 Decatur

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