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

In Detroit Lakes you can determine when it's the best time to plant oenothera by reviewing the USDA zone info.

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 mild cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant oenothera in Detroit Lakes 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 oenothera and expect a good harvest is probably August. You probably don't want to wait any later than that or else your oenothera may not have a chance to fully mature. Starting your oenothera indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Detroit Lakes the average date of last frost happens on May 15. You can expect an average low temperature of -35°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Detroit Lakes is an average and the actual date of last frost is different every year. Half of the time in Detroit Lakes it frosts late in the year after May 15 so always be ready to cover your oenothera in the event of one of those late frosts.

USDA Zone Info for Detroit Lakes

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Detroit Lakes

You may be interested in your other planting guides for Detroit Lakes.