One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of figuring out when to plant iresene is to consult the USDA zone info for Schiller Park.

Planting Calendar for Iresene

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

Since iresene require warm weather you have to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant iresene 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 iresene and expect a good harvest is probably August. You probably don't want to wait any later than that or else your iresene may not have a chance to fully mature. If you are starting your iresene indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Schiller Park. You can expect an average low temperature of -15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Schiller Park is an average and the actual date of last frost is different every year. Half of the time in Schiller Park it frosts late in the year after April 15 so make sure that you are prepared to protect your iresene if you have one of those late frosts.

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.