Different Types of Polytunnel Covers

Polytunnels are a type of greenhouse that is typically made of a metal frame covered with a plastic or fabric material, there are various types of polytunnel coverings, and each type provides a different micro-climate. Polytunnel covers are offered in a wide selection of different types of polytunnel covers available and each different colour type, thickness and film placed on the cover creates a different growing environment within the various sizes of polytunnels, that range from small to larger commercial polytunnels. These structures are used to protect plants from extreme weather conditions and to create a microclimate that is more suitable for protected plant growth.

The many different polytunnel coverings can be purchased directly from online polytunnel suppliers. One type of polytunnel cover is made from a clear plastic material, such as polyethylene. This type of cover allows the maximum amount of light to reach the plants and creates a warm, humid environment inside the tunnel. This type of cover is ideal for plants that require a lot of light and heat, such as tomatoes and peppers. However, clear plastic covers can also create an overly warm environment that can lead to plant stress or overheating. If new to polytunnels always ask the supplier what type suits your crop growth the best.

Another type of covering is made from a reflective material, such as aluminium foil. Reflective polytunnel coverings bounce light back onto the plants, which can help to increase the amount of light available to them. These covers are ideal for plants that require a lot of light but are sensitive to heat, such as lettuce and spinach. Reflective covers can also help to reduce the amount of heat inside the tunnel, making them a good choice for hot, sunny climates.

There are also polytunnel covers available that are made from a combination of clear and reflective materials. These covers allow some light to pass through while also reflecting some of the light back onto the plants. This can create a more moderate microclimate inside the tunnel, making it suitable for a wider range of plants.

In addition to the type of material used, the thickness and colour of the polytunnel coverings can also affect the microclimate inside the tunnel. Thicker covers provide better insulation and can help to keep the temperature inside the tunnel more stable. Dark coloured covers absorb more heat, such as green, dark green and black which can create a warmer environment inside the tunnel, while lighter coloured covers reflect light and heat, creating a cooler environment.

Polytunnel covers can also be designed to be UV resistant or to block out certain wavelengths of light by adding a film onto the polythene. UV resistant covers can help to protect plants from the damaging effects of intense sunlight, while covers that block out certain wavelengths of light can be used to manipulate the spectrum of light available to the plants. For example, blue light is important for promoting vegetative growth, while red light is important for flowering and fruiting. By blocking out certain wavelengths of light, it is possible to create a microclimate that is more suitable for certain types of plants.

Overall, there are many different types of polytunnel covers available, each of which creates a unique microclimate inside the tunnel. By choosing the right cover for your plants and your local climate, you can create the perfect environment for your plants to thrive. Ask your local polytunnels supplier and get a Free Quote concerning about the various types of polytunnel coverings are available.

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