A polytunnel is an elongated semi-circular or square shaped tunnel. It is most often constructed using steel and is covered in polythene. Polytunnels come in a range of sizes and are used to keep plants, vegetables and fruits warm enough to grow in temperate regions. It can also enable you to grow fruits, vegetables, and plants out of season. Recorded live, in a polytunnel on the hottest day in February on record, Steve, Emma and Tony tell you everything you need to know. This episode has been supported by First Tunnels: www.firsttunnels.co.uk
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