Interesting info

Evening primrose opens at dusk and stays open through the night and much of the morning. Usually closes by afternoon.

Botanists have a hard time identifying Oenothera by species because it is highy variable.

I found this related plant in the wet woods, but I haven't been able to identify it yet.

You ought to know

Height: 2' - 5'

Frequency: A few plants found in wet woods as early as June. More plants found in sunny field as late as August.

Blooms: Varies, June-August

Range: Varieties found throughout Indiana.

Also known from Labrador to Minnesota and from Florida to Texas.