Ragwort/Ragweed
(Senecio jacobaea)

Ragwort/Ragweed

A biennial weed that overwinters as seeds or rosettes, once seed is produced it usually dies. The leaves form a rosette that can be seen from autumn to late June. This dies back when the main stem develops before flowering in late summer of the second year. The yellow daisy-like flowers can last until October and can produce over 150,000 seeds. This weed is usually found in rough turf and badly drained soils.

Control

The main way to keep weeds under control is constant vigilance, never allowing the weed to flower or seed and mulching.

  • Remove weeds by hand as soon as you see them

  • Regular mowing will generally eradicate this weed once the lawn is established

  • Hoeing is one of the best ways to remove weeds and should be done in dry weather, if possible

  • Spraying with weedkiller will do the job if the weeds are in the garden border. Spray with a systemic weedkiller that is absorbed through the leaves of the plant and the active ingredient makes its way through the cells of the plant down to the root. It kills these first and then the foliage starts to die off