If you love plants and have a vegetable garden or flowerbed, you've probably already considered how to effectively protect your plants from the vagaries of the weather, pests, and temperature fluctuations. A practical solution for this is a polytunnel. But what exactly is a polytunnel, and is a greenhouse better than a polytunnel? In this article, we'll explain everything you need to know about polytunnels and provide step-by-step instructions on how to build one yourself.
What is a polytunnel?
A polytunnel is a type of greenhouse consisting of arched polytunnel arches over which a special greenhouse film is stretched. These tunnels are available in various sizes and are ideal for protecting plants from adverse weather conditions.
Compared to a traditional greenhouse, which is usually made of glass or polycarbonate, a polytunnel is more flexible, easier to set up, and more cost-effective. Polytunnels are particularly popular with hobby gardeners and farmers because they offer a quick and effective solution for optimally cultivating plants.
The advantages of a polytunnel
A polytunnel offers numerous advantages that make it an excellent choice for garden lovers:
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Protecting plants: The film provides excellent protection against rain, wind, hail, and pests, keeping your crop healthy and undamaged.
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Improved growth conditions: The transparent film captures sunlight, creating a warm and humid microclimate inside the tunnel—ideal conditions for plant growth. The greenhouse film's UV protection provides additional protection from harmful UV rays and makes the film more durable.
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Longer growing season: With a polytunnel, you can start sowing earlier in the year and harvest later in the year because the plants are protected from the cold.
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Cost-effectiveness: Compared to a permanent greenhouse, a polytunnel is significantly cheaper and easier to set up.
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Flexibility: Polytunnels can be easily dismantled, moved and adapted to new conditions.
Is a greenhouse better than a polytunnel?
The answer to this question is no. There are significant differences between greenhouses and polytunnels, although they are used in similar ways. Find out what's right for you and your garden project:
| feature | Polytunnel | greenhouse |
|---|---|---|
| material | Greenhouse film | Glass or polycarbonate |
| Cost | Cheap | More expensive |
| Construction | Simple and fast | More complex and time-consuming |
| longevity | Lasts 2-5 years (depending on film quality) | Very durable |
| flexibility | Easy to move | Fixed location |
| optics | Functional, rather simple | Stylish and appealing |
If you're on a budget or need temporary shelter, a polytunnel is the ideal choice. A greenhouse, on the other hand, is a long-term investment that offers a beautiful appearance, especially for ornamental gardens.
How to build a polytunnel yourself
Building a polytunnel is easier than you might think. With a little skill and the right materials, you can erect your own polytunnel in a day.
Materials:
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Polytunnel arches: These can be made of plastic, metal, or PVC. They form the framework of the tunnel.
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Greenhouse film: UV-resistant , transparent film that is especially suitable for horticulture.
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Wood or metal rods: For anchoring the tunnel arches in the ground.
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Cords, cable ties and foil tape: For fixing the film.
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Shovel and hammer: For the construction.
Step-by-step instructions:
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Select location: Choose a sunny, sheltered spot in your garden. The ground should be level.
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Erecting tunnel arches: Insert the tunnel arches into the ground at a distance of approximately 1 meter from each other. The arches should be firmly anchored to ensure stability.
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Stretching greenhouse film : Spread the film over the arches and secure it with string, cable ties, or special film adhesive tape. Make sure the film is taut to prevent it from flapping in the wind.
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Back up pages: Dig the edges of the film slightly, weigh them down with stones or secure them with ground anchors to prevent them from slipping.
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Set up ventilation: To prevent mold growth, you can leave openings or add zippers at the ends of the tunnel.
Tips for using a polytunnel
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Regular ventilation: This will prevent heat build-up and mold.
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Good soil preparation: Loosen the soil and work in organic fertilizer before planting.
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Pest control: Check the tunnel regularly for pests and remove weeds.
Conclusion: Polytunnel – a flexible solution for your garden
A polytunnel is a cost-effective and versatile alternative to the traditional greenhouse. It provides optimal protection for your plants, improves growing conditions, and extends the growing season. With the right materials and a little DIY skill, you can build your own polytunnel quickly and easily.
Whether you want to grow vegetables, flowers, or other plants, a polytunnel is an excellent investment that will quickly pay for itself. Give it a try and let your garden flourish!
Good luck with your gardening!
