Flowers of the forest: Evening Primrose

You’d be hard pressed to miss the big, almost luminous yellow flowers of evening primrose throughout Newborough Forest. From June until September they’ll be in flower and then their seed heads will stand well into next year’s flowering season too.

Evening primrose - Oenothera spp. I think it is  the large flowered Oenothera glazioviana.

Evening primrose – Oenothera spp. I think it is the large flowered Oenothera glazioviana.

The Evening Primroses are biennial plants: during their first year, they just grow leaves and then in the second year they flower and set seeds. But even the leaves are distinctive and noticeable with their bright red tips contrasting with the green leaf parts.

First year leaves of Evening Primrose

First year leaves of Evening Primrose

Evening Primrose is an incomer from the United States. It flowers and seeds prolifically and spreads easily on light, sandy soils.

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2 thoughts on “Flowers of the forest: Evening Primrose

  1. Barry

    Rose (The Wild Flower Key) warns that hybrid swarms form.
    That said, one of the key differences from the book between O. glazioviana and O. cambrica is given as . From the photo, on that character, it seems to be O. cambrica, the Small-flowered Evening Primrose; I can’t check the other feature from the photo.

    Reply
    1. Kay hortographical Post author

      Thanks for your comment – I’m never 100% sure, and I know with the evening primroses there is a lot of hybridization. I think the quote you provided that describes the differences has somehow slipped into the ether as it isn’t showing in your comment:)

      Reply

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