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What Are The Disadvantages Of Polytunnels?

If you’re thinking of buying a polytunnel, you should keep a few things in mind. You’ll want to consider the length of time you plan to use the structure. Also, remember that a polytunnel can be expensive. It can cost from fifty to a thousand dollars, depending on its size and construction. If you’re only using it for a few years, it may be worth buying a less expensive model. However, if you want it to last, you’ll need to invest in a more durable one.

Larger polytunnels

Generally, polytunnels are made of polythene sheeting and come in a range of sizes and materials. Each type has different advantages and disadvantages, and requires a different assembly process. Some are multi-span structures, which combine two or more tunnels. The technology behind these structures is rapidly advancing. In recent years, additional features such as irrigation systems and ventilation kits have been introduced.

Planning agencies will consider the risks associated with surface water run-off and flood risk. In some cases, polytunnels may adversely affect the water environment. This may require a Habitats Regulations Assessment. If this is the case, it is necessary to carry out detailed water management plans to mitigate any impacts on water quality.

Larger polytunnels can be very visually intrusive. They are often high and can block a view. Furthermore, they cover a large area of land. While they may not impact on local residential amenities, they can impede traffic and can lead to increased noise levels.

Higher temperatures

Higher temperatures can be problematic for plants in polytunnels, especially when the plants are too close together. This can affect air flow and ventilation, which may lead to disease and other problems. In addition, excessive heat can lead to weed growth, which can outcompete the plants and harbour pests. This is why ventilation is essential in polytunnels.

To grow plants in polytunnels, it is a good idea to use manure. Bovine or horse manure is optimal for most crops, but it is possible to use poultry droppings as well. Using the right type of manure for your crops will ensure that the right amount of nutrients is available to them at the right time. The right mix-ins can also increase the growth of your crops.

The warmer temperatures in polytunnels allow you to sow crops much earlier than you could if you were using open fields. This is because plants have more time to mature before they have to be harvested. For example, if you wanted to grow tomatoes and other warm-season vegetables, you could start your sowing at the beginning of spring, which would otherwise be impossible. You could also try germination in polytunnels by using heat mats or using steam.


One of the most common pests in polytunnels is the aphid, which can be particularly damaging to young plants. The good news is that there are ways to control this pest, including using a natural predator like ladybirds and lacewings. They can consume up to five thousand aphids in a day and can reduce the overall population.

Polytunnels are beneficial for many reasons, including the fact that they extend the growing season and increase crop diversity. However, these structures can also be homes for pests, so proper care is essential. For starters, they need to be clean and well ventilated, so that bacteria and fungi do not build up. You should also make sure to avoid over-watering your polytunnel.

Polytunnels are a great option for commercial use because they can help increase yields and reduce farming time. High-quality polytunnels often contain harvesting machines that automate the entire process.


Aesthetics are one of the most important factors when it comes to polytunnels. A properly designed structure can increase plant growth while simultaneously retaining the aesthetic qualities of a garden. The aesthetics of a polytunnel are often affected by the cover material. Different types of cover materials will reflect light differently and offer different degrees of resistance. In addition, the choice of cover material will affect the temperature of the soil and air within the structure. The material used should be durable and resistant to moisture and heat loss.

While polytunnels can be very expensive, they are not as expensive as you might think. Prices can vary from PS200 to PS30,000, depending on material and size. If you have a larger budget, you can get a more durable structure that will be easier to manage and maintain. Most of the time, your budget dictates the type of material and size of polytunnels you buy. Regardless of your budget, however, it is a good idea to see a physical example of the greenhouse that you want to buy.

Some people prefer a greenhouse over a polytunnel. Some feel that greenhouses are more aesthetic, especially when set up in the garden. However, this depends on personal preference, and you may find that polytunnels suit you better. If you’re unsure about the right option, talk to a polytunnel owner and decide for yourself.