Because a polytunnel encloses a larger volume of air than a greenhouse, a polytunnel stays warmer longer, providing a frost free environment for a greater proportion of the year. For an even longer growing season, bubble insulation can be used or the polytunnel can be heated.
Why buy a polytunnel?
A Polytunnel can give you a mediterranean or even a tropical climate right in your garden. Grow exotic fruits and vegetables, and enjoy traditional fruit and vegetables out of season. A polytunnel encloses a larger volume of air than a greenhouse which enables a polytunnel to stay warmer for longer, providing a frost free environment for a greater proportion of the year. Polytunnels can give up to 5 degrees of frost protection. Another big advantage is shelter from wind and rain – for your plants and for you!
For the same price as a small greenhouse you can buy a large polytunnel. Polytunnels are also a safer alternative to glass houses. The polythene cover lasts 7 to 8 years and replacement covers generally cost about 20% of the complete polytunnel i.e. less than 3% of the tunnel price per year.
It is not necessary to concrete in the ground tubes – the poly-tunnel is held down by the polythene, which is buried in the ground.
How big are our polytunnels?
Our Polytunnels are 2.1m (7ft) high and supplied as a complete package consisting of steel frame, ground tubes, polythene cover, timber door frames, two hinged doors, anti-hotspot tape and full instructions. Hoop spacing is 1.2m (4ft) for a strong frame.