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.

You will be able to estimate when it's a good idea to plant coral bells by checking out the USDA zone info for Palos Hills.

Planting Calendar for Coral Bells

Frost tolerance for coral bells:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since coral bells are moderately cold tolerant you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant coral bells in Palos Hills is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant coral bells and expect a good harvest is probably September. You probably don't want to wait any later than that or else your coral bells may not have a chance to grow to maturity. You can get started a little bit earlier by starting your coral bells indoors.

Last Frost Date

In Palos Hills the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Palos Hills and it is different every year. Half of the time in Palos Hills there is a last frost after April 15 so make sure that you are ready to cover your coral bells if you have one of those late frosts.

USDA Zone Info for Palos Hills

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 Hills

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