Also known as Jointed Charlock, this annual plant grows on cultivated ground, wasteland and roadsides and can be found throughout the lowlands and Northern Isles, but is less common in the West.
Its leaves are deeply lobed, not unlike a dandelion leaf, with a large end lobe and side lobes rapidly shrinking towards the leaf base.
The flowers resemble Charlock, but can be yellow, white or lilac. Each flower is about 30mm in diameter, having 4 cruciform petals with tiny veins. If white petals the veins are purple, and if yellow the veins are pale green. Usually the flowers have 6 stamens, 4 long and 2 short. The flowers appear along racemes, which extend during fruiting. When ripe the siliques break up into pieces which can hold the seeds un-germinated for years in the soil.
The cylindrical pods, or siliques, are constricted between the seeds, appearing bumpy. This is the best way to differentiate it from other brassicas like Charlock or Mustard.
Wild radish is a great source of pollen, especially for honey bees. It is completely edible, the leaves and flowers are peppery, the seed pods taste like radish, and the roots are mildly flavoured.