Square-stalked Willowherb - Epilobium tetragonum

    Alt Name
    Square-stemmed Willowherb

    Medium to tall plant with long strap shaped, toothed leaves. The pink flowers have four notched petals and a club shaped stigma. The stem is square and the fruit capsules are 7 to 10 cm long.

    Similar Species

    The square stem and strap-shaped leaves distinguish this from other Willowherbs.

    Identification difficulty
    Recording advice

    The County Recorder has asked for a specimen of this plant to be retained for verification


    Damp areas such as ditches, stream sides and woodland clearings.

    When to see it

    July and August.

    Life History


    UK Status

    Fairly frequent in lowland England and Wales north to Yorkshire.

    VC55 Status

    Occasional in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 53 of the 617 tetrads

    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map