Common Ragwort (Senecio jacobaea) is common around the village of Charlton Down. Its bright yellow flowers make a great splash of colour on the waysides, grazing land and uncultivated ground where it grows. It’s a plant that attracts insects for its nectar and pollen, and some of them like the Cinnabar moth caterpillars like to eat it, but there is a problem. It can be poisonous for grazing animals such as cattle and horses.