Oenothera b. Twilight is an upright, herbaceous perennial that has mid-green foliage with a distinctive purple-bronze central marking, most pronounced in young growth
Flowers are large, clear pink and produced throughout summer in large quantities
Striking form of evening primrose
New growth emerging in the spring from winter dormancy appears as a deep plum color
During the warmer months, foliage changes to mid-green as it begins a prolific display of large, pale pink flowers lasting through the warmer months
Tolerates extreme cold as well as dry
