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Groundsel

Senecio vulgaris

Large Groundsel growing amongst rocks and waste ground

Groundsel is a common annual weed of rough and cultivated ground. You can find its clusters of small yellow flowers appearing on road verges, in gardens and on waste ground all throughout the year.

How to spot it

The leaves of Groundsel are bright shiny green, long and raggedly lobed. The small yellow flower heads are in cluster at the ends of the stems appearing to emerge from little tubes.

Bright yellow Groundsel flowers growing on a roadside

Best time to see

You can find Groundsel in flower throughout the year.

Where it grows

Groundsel is an annual weed of cultivated or disturbed ground, cropping up along field edges, roadside verges and on waste grounds.

Are Groundsel threatened?

Groundsel continues to be widespread throughout the British Isles, although there appears to have been a decline in the Scottish Highlands, possibly due to abandoning of marginal cultivations.

Things you might not know

  • Both birds and rabbits enjoy the leaves and seeds of Groundsel, and it is widely used as food for caged birds.
  • Its name comes from an Old English word grundeswilige meaning ‘ground swallower’, reflecting its tendency to grow profusely wherever it gets a chance.
  • Groundsel is a good food source for caterpillars of butterflies and moths and is one of only two plant species that provide food for cinnabar moth caterpillars.

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