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.

The best time to plant runner beans in Sterling Heights should be figured out by using the USDA zone info.

Planting Calendar for Runner beans

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

Runner beans are not cold tolerant which tells us that you must wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant runner beans in Sterling 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 runner beans and expect a good harvest is probably August. You probably don't want to wait any later than that or else your runner beans may not have a chance to grow to maturity. You can get started a little bit earlier by starting your runner beans indoors.

Last Frost Date

On average the last frost is on April 15 in Sterling Heights. You can expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Sterling Heights may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Sterling Heights you get surprised by a frost after April 15 so always be ready to protect your runner beans in the event of one of those late frosts.

USDA Zone Info for Sterling Heights

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 Sterling Heights

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