One of the first steps you take when you are determining 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.

You should be able to estimate when it's possible to plant cardinal flower by checking out the USDA zone info for Mundelein.

Planting Calendar for Cardinal Flower

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

It's not a good idea to plant cardinal flower until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant cardinal flower in Mundelein 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 cardinal flower and expect a good harvest is probably August. Any later than that and your cardinal flower may not have a chance to grow to maturity. Starting your cardinal flower indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

It's important to remember that USDA zone info for Mundelein is not always accurate and the actual date of last frost changes from year to year. Half of the time in Mundelein you get surprised by a frost after April 15 so be sure to be ready to protect your cardinal flower in the event of a late frost.

USDA Zone Info for Mundelein

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 Mundelein

You may be interested in your other planting guides for Mundelein.