The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant impatiens in Palos Park should be determined by checking out the USDA zone info.

Planting Calendar for Impatiens

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

It's a bad idea to plant impatiens until after the last frost because they do not do well in cold weather.

The earliest that you can plant impatiens in Palos 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 impatiens and expect a good harvest is probably August. Any later than that and your impatiens may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your impatiens indoors.

Last Frost Date

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

Since the USDA zone info for Palos Park is just an average the actual date of last frost will vary from year to year. Half of the time in Palos Park you get surprised by a frost after April 15 so be sure to be ready to cover your impatiens if you have a surprise late frost.

USDA Zone Info for Palos 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 Palos Park

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