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What Temperature Should A Polytunnel Be?

What Temperature Should A Polytunnel Be

Ideal temperature for a polytunnel

To grow crops in a polytunnel, the temperature must be comfortable for the plants. The ideal temperature range is between 25 and 27 degrees Celsius, or 77 and 81 degrees Fahrenheit. To maintain this temperature, it is important to increase ventilation within the polytunnel. The temperature is also affected by the amount of humidity in the air. In addition, the amount of sunlight within the polytunnel should be controlled.

It is best to shade the plants from direct sunlight. This will ensure that the plants are not scorched or burnt. To do this, you can use roll-up screens made of aluminium or wood. Another option is to use paint-on materials such as polypropylene shade cloth or vinyl plastic shading. In addition, the temperature should be kept above freezing, as most plants cannot survive cold temperatures in the soil. For this reason, if the temperature is low, it is essential to raise the plants off the ground to keep the temperature comfortable. If your plants are growing in a polytunnel, you may need a heating system to keep the temperature stable.

Cost of heating a polytunnel

Heating a polytunnel is a vital step in the growing process, as it helps to maintain a microclimate. This is useful in extreme weather and allows you to grow plants that do not thrive in cold climates. Heating a large polytunnel can be expensive. Even a medium sized polytunnel requires a lot of energy to heat up. You can minimise this cost by narrowing down the polytunnel to a smaller area.

Polytunnels also help you to extend the growing season. This is useful for market gardeners, as it allows them to grow crops that would otherwise not be able to survive cold climates. A polytunnel can also protect your plants from seasonal pests and harsh weather.

Insulation options

When it comes to polytunnels, there are several options for insulating them. You can choose from various types of polythene that will help you control the temperature inside. Typically, polythene is double-layered and reinforced with nylon mesh. This makes it more durable and insulating. However, these types of polytunnels are more expensive than regular ones, and they do not allow much light to penetrate.

Polytunnels are available in sizes of 16 – 30 feet, or 30 – 90 feet. The size of your polytunnel is important. Make sure that you choose the correct size so that you can grow the plants and crops in the correct environment. It’s also important to consider the layout of the tunnel so that you can make the most of the space you have.

Ventilation in a polytunnel

One of the most important aspects of a polytunnel is the ventilation. Proper ventilation will ensure the growth of your crops and reduce the risk of diseases. Ventilation can be achieved in a variety of ways. For instance, you can place louvre vent panels on one end of the tunnel, and install extractor fans at the other.

Another way to improve ventilation is to choose the appropriate netting. Most polytunnels come with netting, but there are also alternatives available. A polythene blind is another option, which can be rolled down on the outside of the netting. This option helps you control the ventilation while keeping the tunnel at a constant temperature.

Overcrowding in a polytunnel

Overcrowding in a polytennel can be a major problem, making the plants more prone to diseases. To avoid this, make sure that the tunnel is properly ventilated by opening the doors and side vents. Proper ventilation is important to prevent the growth of weeds and other undesirable plants.

Overcrowding can also cause stress to plants in hot weather. Heat is the biggest enemy of plant growth and if the temperature rises too high, this will negatively affect the growth of your plants. It will also result in an increased risk of disease and pest infestations. In addition, overcrowding will cause weeds to grow in your plot, outcompeting your crops and harbouring pests.

The best way to prevent overcrowding is to use a polytunnel with a door that can be left open all year round. This way, the temperature can be controlled and the crop will not be damaged by pests or diseases.