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.

In Oak Brook you can figure out when it's a good idea to plant snap beans by referring to the USDA zone info.

Planting Calendar for Snap beans

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

Snap beans require warm weather which means that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant snap beans in Oak Brook 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 snap beans and expect a good harvest is probably August. Any later than that and your snap beans may not have a chance to fully mature. You can get started a little bit earlier by starting your snap beans indoors.

Last Frost Date

The average date of last frost is April 15 in Oak Brook. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Oak Brook 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 Oak Brook it frosts late in the year after April 15 so make sure that you are prepared to protect your snap beans in the event of one of those late frosts.

USDA Zone Info for Oak Brook

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 Oak Brook

You may be interested in your other planting guides for Oak Brook.