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Common Evening-primrose

©Northeast Wildlife

Common evening-primrose

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Enw gwyddonol: Oenothera biennis
An introduced species, Common evening-primrose is now naturalised on waste ground, roadside verges and railway cuttings. It has long been used to produce the herbal remedy, evening-primrose oil.

Top facts

Stats

Height: up to 1.5m

Conservation status

Introduced, but naturalised species.

Pryd i'w gweld

June to September

Ynghylch

Common evening-primrose, or 'Evening star', was introduced into the UK in the 1600s and has since become naturalised on dry waste ground, roadside verges, sand dunes and railway cuttings. Its common names allude to its large, yellow, sun-like flowers that only open in the evening. These blooms appear on tall spikes from June to September and attract bees, butterflies and moths searching for nectar. For this reason, Common evening-primrose is a good choice for wildlife gardens.

What to look for

Common evening-primrose has large, yellow flowers, comprising four petals, that appear in loose formation on tall stems. Its narrow, lance-shaped leaves have red veins.

Where to find

Scattered distribution, mainly across Central and South East England.

Roeddech chi yn gwybod?

Common evening-primrose has long been cultivated for its seeds which are the source of evening-primrose oil. This oil is used in complementary medicine to decrease premenstrual syndrome and to treat skin disorders such as dermatitis and psoriasis.