One of the first steps you take when you are getting a good idea 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.

In Schiller Park you can figure out when it's possible to plant trachelium by referring to the USDA zone info.

Planting Calendar for Trachelium

Frost tolerance for trachelium:	Not tolerant of frost.
When to plant:	After the last frost.

You really shouldn't plant trachelium until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant trachelium in Schiller Park 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 trachelium and expect a good harvest is probably August. Any later than that and your trachelium may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your trachelium indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Schiller Park. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Schiller Park may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Schiller Park you get surprised by a frost after April 15 be ready to cover your trachelium in the event of a late frost.

USDA Zone Info for Schiller Park

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 Schiller Park

You may be interested in your other planting guides for Schiller Park.