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Garden and Commercial Polytunnels. Call Sales 01667 454875

About Polytunnels

About Polytunnels

Useful information about Polytunnels

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Polytunnels first appeared in the 1960s once the plastics industry managed to produce reliable wide width polythene sheeting. They continue to become more popular each gardening year. That is the large walk in frame tunnels covered in plastic sheeting for growing a wide variety of crops from lettuces to tomatoes and raspberries.

The size is, in theory, whatever you like but typical sizes for gardens and allotment plots are widths of   two to five metres and lengths of two to twenty metres. A minimum workable height at the centre of the    tunnel   is two to two and a half metres.

There are two basic designs available to buy, semicircular arc and high tent shape. Well designed, constructed and maintained they can last for years. By the way we have found two common spellings Polytunnel and Poly Tunnel. Use which one you are most comfortable with.

You can also check these links out Growing in a polytunnel / Growing in a Polytunnel in the Winter

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Benefits of a polytunnel

  • Crops grow quicker earlier and possibly larger. The latter depending on your harvesting strategy – small is tender or giant could be a silver cup.
  • .They are per square metre less expensive than glass or polycarbonate greenhouses
  • There is a wide range of sizes available.
  • They absorb the sun and achieve the most productive germination and spring growing temperatures two to six weeks ahead of the open garden according to your location.
  • They protect growing plants from rain, frost, snow, hail and gales and therefore enable more autumn, winter and early spring crops to be grown.
  • Using irrigation tubing that has drip holes built in close planting in rows can be achieved. If you split the growing area into zones a multizone irrigation system will allow you to give blocks of small and large vegetables, soft fruits and tender fruit trees
  • Kits to allow liquid fertilizers to be metered into the irrigation water systems are available. 

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      What to look out for when buying a polytunnel

  • Strength and tearability of plastic sheeting cover.
  • Ultraviolet resistance and quoted lifespan of the sheeting.
  • Quality of galvanised or protective painted metal framework.
  • Ease of construction.
  • Sealabilty of doors.
  • Possibility of fitting a temperature controlled fan so that you can use through the hottest months. You will be surprised how hot the inside of a polytunnel can become on a sunny day from June to August.
  • Ability to partly roll the sides up in the summer if you don’t want the cost of a fan.
  • Shading and windbreak material be easily fitted.

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