One of the best tools that you have as gardeners to help us figure out 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 getting a good idea when it's the best time to plant calla lily is to refer to the USDA zone info for Evergreen Park.

Planting Calendar for Calla Lily

Frost tolerance for calla lily:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably a bad idea to plant calla lily until after the last frost because they require warm weather.

The earliest that you can plant calla lily in Evergreen 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 calla lily and expect a good harvest is probably August. You probably don't want to wait any later than that or else your calla lily may not have a chance to fully mature. You can get started a little bit earlier by starting your calla lily indoors.

Last Frost Date

In Evergreen Park 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.

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 Evergreen Park and it changes from year to year. Half of the time in Evergreen Park you get surprised by a frost after April 15 so be sure to be ready to cover your calla lily in the event of a surprise late frost.

USDA Zone Info for Evergreen Park

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 Evergreen Park

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