Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Park Ridge you will be able to determine when it's possible to plant coreopsis.

Planting Calendar for Coreopsis

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

Since coreopsis do well in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant coreopsis in Park Ridge 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 coreopsis and expect a good harvest is probably September. If you wait any later than that and your coreopsis may not have a chance to fully mature. If you are starting your coreopsis indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Park Ridge. In the coldest months of winter you should expect an average low temperature of 0°F.

Always keep in mind that USDA zone info for Park Ridge is an average and the actual date of last frost is different every year. Since half of the time in Park Ridge last frost occurs after April 15 be ready to protect your coreopsis if you have a late frost.

USDA Zone Info for Park Ridge

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Park Ridge

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