Dyffryn Gardens joins Cerys Matthews in backing plant health campaign WELSH singer Cerys Matthews is backing a new Welsh Government Plant Health campaign to enhance our enjoyment of the garden and adopt best practice to control the spread of pests and diseases. The physical and mental health benefits of planting and growing are well understood, and as spring approaches our thoughts turn to our precious gardens, as people across Wales make their planting plans and purchases for the growing season ahead. Plant enthusiast and famous singer, songwriter, author and broadcaster Cerys Matthews is backing a Welsh Government campaign to offer advice and guidance to enhance our enjoyment of the garden, by sourcing plants carefully, inspecting them on arrival to detect and control the spread of pests and diseases, and adopting good husbandry practices.