Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Niles you will be able 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 should not plant runner beans until after the last frost has passed because they require warm weather.

The earliest that you can plant runner beans in Niles 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. If you wait any later than that and your runner beans may not have a chance to fully mature. If you are starting your runner beans indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Niles the average date of last frost happens on April 15. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Niles is not always accurate the actual date of last frost is different every year. Since half of the time in Niles you get surprised by a frost after April 15 be ready to cover your runner beans if you have a late frost.

USDA Zone Info for Niles

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 Niles

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