One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

A common way of estimating when it's a good idea to plant oriental poppies is to examine the USDA zone info for Mokena.

Planting Calendar for Oriental poppies

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

Oriental poppies tend to make it in a little bit of cold which means that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant oriental poppies in Mokena 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 oriental poppies and expect a good harvest is probably September. Any later than that and your oriental poppies may not have a chance to really do well. You can get started a few weeks earlier by starting your oriental poppies indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Mokena may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Mokena there is a last frost after April 15 so just be sure to be ready to protect your oriental poppies if you have a surprise late frost.

USDA Zone Info for Mokena

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 Mokena

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