One of the first steps you take when you are making a decision about your gardening schedule is find your 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.

The USDA zone info for Northfield should be reffered to in order to figure out when it's the best time to plant runner beans.

Planting Calendar for Runner beans

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

You can not plant runner beans until after the last frost because they require warm weather.

The earliest that you can plant runner beans in Northfield 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 fully mature. You can get started a couple of weeks earlier by starting your runner beans indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Northfield. You can expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Northfield is just an average and the actual date of last frost changes from year to year. Since half of the time in Northfield you get a frost after April 15 be ready to protect your runner beans in the event of one of those late frosts.

USDA Zone Info for Northfield

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Northfield

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