One of the best tools that you have as gardeners to help us estimate 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.

A common way of making a decision about when to plant scarlet runner beans is to refer to the USDA zone info for Decatur.

Planting Calendar for Scarlet Runner Beans

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

It's probably a bad idea to plant scarlet runner beans until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant scarlet runner 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 scarlet runner beans and expect a good harvest is probably August. If you wait any later than that and your scarlet runner beans may not have a chance to grow to maturity. Starting your scarlet runner beans indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Decatur. You can expect an average low temperature of 5°F in the coldest months of winter.

Always keep in mind that USDA zone info for Decatur is just an average and the actual date of last frost will vary from year to year. Half of the time in Decatur last frost occurs after April 15 so always be ready to protect your scarlet runner beans in the event of a late frost.

USDA Zone Info for Decatur

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°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.