One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Oak Brook should be used to estimate when it's a good idea to plant banana.

Planting Calendar for Banana

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

It's probably not a good idea to plant banana until after the last frost because they require warm weather.

The earliest that you can plant banana 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 banana and expect a good harvest is probably August. Any later than that and your banana may not have a chance to really do well. If you are starting your banana indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Oak Brook. You should expect an average low temperature of -15°F in the coldest months of winter.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Oak Brook and it can change quite a bit from year to year. Since half of the time in Oak Brook you get surprised by a frost after April 15 be ready to cover your banana if you have 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.