Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. 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 determine when you can plant peonies by using the USDA zone info for Forest Park.

Planting Calendar for Peonies

Frost tolerance for peonies:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant peonies just a tiny bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant peonies in Forest Park is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant peonies and expect a good harvest is probably August. Any later than that and your peonies may not have a chance to grow to maturity. Starting your peonies indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Forest Park. In the coldest months of winter you should expect an average low temperature of -10°F.

Keep in mind that USDA zone info for Forest Park is an average and the actual date of last frost changes from year to year. Half of the time in Forest Park there is a last frost after April 15 so be sure to be ready to protect your peonies if you have one of those late frosts.

USDA Zone Info for Forest 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 Forest Park

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