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Care of the plant Oenothera or Evening primrose

Care of the plant Oenothera or Evening primrose

The genus Oenothera, family Onagraceae, comprises 100 species of annual or perennial plants native to North America. Some species are: Oenothera speciosa, Oenothera fruticosa, Oenothera missouriensis, Oenothera biennis, Oenothera odorata, Oenothera grandiflora, Oenothera californica, Oenothera acaulis, Oenothera rosea, Oenothera perennis.

Common names: Evening primrose, Suncups, Sundrops.

They are easily grown plants with oval or lanceolate leaves, blue-green in color and arranged alternately. The fragile flowers appear in spikes or solitary and can be white, yellow, purple or pink. They bloom from summer to early fall.

They are used in rockeries and borders combined with other plants with brightly colored flowers.

Oenothera requires full sun exposure and average annual temperatures of 15-25ºC.

The soil may be poor but it must be well drained. The planting is done in spring.

They are plants resistant to drought; water moderately with a small amount of water waiting for the substrate to dry.

Fertilize every 15 days in summer with mineral fertilizer to improve flowering.

They are plants resistant to pests and diseases but sensitive to excess watering.

They are propagated from seeds sown in spring in the final location or in the nursery and by division in late winter.

Images of the plant Oenothera or Evening primrose

Oenothera rosea
Oenothera rosea
Oenothera speciosa
Oenothera speciosa
Oenothera speciosa
 

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