Ragwort is a very difficult weed to control and spreads easily. It grows all year round and is established from both seeds and old existing roots. Ragwort is a poisonous plant to stock and becomes more palatable when sprayed, so stock must be kept away until it has died down. When plants are small, boom spray with Baton 800WSG or Relay® Super S. Large rosettes or ragwort regrowth should be spot sprayed with Conquest®.