Oenothera glazioviana

About

Oenothera glazioviana is a species of flowering plant in the evening primrose family known by the common names large-flowered evening-primrose and redsepal evening primrose. Oenothera lamarckiana was formerly believed to be a distinct species, but is now regarded as a synonym of Oe. glazioviana. Oenothera glazioviana can be found in scattered locations worldwide as an introduced species and in some locations behaves as an invasive species. It has long been cultivated as an ornamental plant.

Summary from Wikipedia