One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of estimating when you can plant oenothera is to look at the USDA zone info for Du Quoin.

Planting Calendar for Oenothera

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

Oenothera do well in moderate cold which means that you can get them planted earlier than other plants that might not handle the cold.

The earliest that you can plant oenothera in Du Quoin 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 oenothera and expect a good harvest is probably September. If you wait any later than that and your oenothera may not have a chance to fully mature. Starting your oenothera indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Du Quoin. You can expect an average low temperature of -5°F in the coldest months of winter.

Keep in mind that USDA zone info for Du Quoin may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Du Quoin there is a last frost after April 15 be ready to cover your oenothera in the event of a late frost.

USDA Zone Info for Du Quoin

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Du Quoin

You may be interested in your other planting guides for Du Quoin.