The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 Chicago Ridge can be looked at to figure out when it's a good idea to plant schizanthus.

Planting Calendar for Schizanthus

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

Since schizanthus require warm weather it's important to wait until after the last frost before you can plant them.

The earliest that you can plant schizanthus in Chicago Ridge 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 schizanthus and expect a good harvest is probably August. Any later than that and your schizanthus may not have a chance to fully mature. Starting your schizanthus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Chicago Ridge the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -10°F.

Keep in mind that USDA zone info for Chicago Ridge is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Chicago Ridge you get a frost after April 15 be ready to cover your schizanthus in the event of a late frost.

USDA Zone Info for Chicago Ridge

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 Chicago Ridge

You may be interested in your other planting guides for Chicago Ridge.