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    Flixweed [Descurainia sophia]

    Annual to biennial seed-propagated weed, 50-100cm in height depending on the site. Large numbers can be found on warm, nutrient-rich, light soils.

    overview

    Flixweed - image 1

    Flixweed - image 1

    Flixweed - image 2

    Flixweed - image 3

    Pest Profile

    • About the pest

      Description

      Cotyledons are small and club-shaped. Bottom leaves form in a dense rosette, initially tri-lobed, later pinnate, then bipinnate (feathery) (Picture 1). Young plants are easily confused with mayweed. The flowers are unimposing, greenish to yellow with terminal inflorescences (Picture 2). Each plant can produce hundreds of thousands of seeds (Picture 3). The seeds remain viable in the soil for long periods.

      Symptoms & Diagnosis

      Occurence

      Winter rapeseed, in particular with tight crop rotation, and also winter cereals.