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

In Southfield you can determine when it's possible to plant runner beans by looking at the USDA zone info.

Planting Calendar for Runner beans

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

You really shouldn't plant runner beans until after the last frost because they require warm weather.

The earliest that you can plant runner beans in Southfield 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 runner beans and expect a good harvest is probably August. Any later than that and your runner beans may not have a chance to really do well. You can get started a couple of weeks earlier by starting your runner beans indoors.

Last Frost Date

The average date of last frost is April 15 in Southfield. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Southfield is an average the actual date of last frost changes from year to year. Since half of the time in Southfield there is a last frost after April 15 be ready to cover your runner beans if you have a surprise late frost.

USDA Zone Info for Southfield

Here is the info for USDA Zone 6a.

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

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Southfield

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