Appeal for 2,000 bottles to build flower show greenhouse They will construct it during the event, which runs from April 25 to 28 at the Great Yorkshire Showground in Harrogate, North Yorkshire, but first need to collect the thousands of plastic bottles required. Peter Murphy, from Groundwork North Yorkshire which will run the sessions, added: "We can use both clear and green two-litre plastic bottles, which are then slotted on to ordinary garden canes and fit into a wooden frame to create the greenhouse. There are many imaginative and useful ways to recycle plastic bottles, rather than simply melting them down, and building a greenhouse to grow your own plants is one of the most productive. Organisers are asking people to donate used bottles at one of three local drop-off points - the car park at the Regional Agricultural Centre on Railway Road, Harrogate, Groundwork Leeds at the Environment and Business Centre on Merlyn-Rees Avenue in Morley or Groundwork North Yorkshire at Selby Civic Centre, Doncaster Road, Selby. Other attractions at the 2013 Harrogate Spring Flower Show include more than 100 plant nursery displays and Britain's biggest floral art exhibition.