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.

A common way of getting a good idea when it's possible to plant scarlet runner beans is to examine the USDA zone info for Glendale Heights.

Planting Calendar for Scarlet Runner Beans

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

Since scarlet runner beans are not cold tolerant it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant scarlet runner beans in Glendale Heights 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. Any later than that and your scarlet runner beans may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your scarlet runner beans indoors.

Last Frost Date

On average the last frost is on April 15 in Glendale Heights. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Glendale Heights is an average the actual date of last frost changes from year to year. Since half of the time in Glendale Heights last frost occurs after April 15 be ready to cover your scarlet runner beans if you have one of those late frosts.

USDA Zone Info for Glendale Heights

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 Glendale Heights

You may be interested in your other planting guides for Glendale Heights.