Best of the bunch
Evening primrose (Oenothera) The scented, deep yellow papery flowers of the evening primrose open at dusk and are pollinated by night-flying insects.
Each flower may last only a day, but many more are produced all summer long.
They make neat plants that can be used as fillers in most borders, gravel beds or herb gardens and are a magnet for butterflies and bees.
They need a sunny, well-drained spot to thrive and the flowers don’t always open in the evening but often during the day.
Good varieties include O. fruitcosa Fireworks and O. glauca Erica Robin.