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How Do Polytunnels Protect From Frost?

Do Polytunnels Protect From Frost

There are many benefits of using a polytunnel for your garden. First of all, you can control the growing environment. There are tools and equipment that can help you control the temperature and moisture in the polytunnel. These structures are also ideal for preserving beneficial insects such as ladybugs, aphid midges, and honeybees. Other beneficial insects include braconid wasps, ground beetles, damsel bugs, tachinid flies, and soldier beetles.

Sizes of polytunnels

If you are concerned about the effects of frost on your plants, polytunnels are an effective way to protect your plants from damage caused by the cold. Many polytunnels are double-glazed, which will keep out the cold and save you money on heating bills. If you don’t have an awning to cover your polytunnel, you can cover it with a polythene cloche.

There are a variety of polytunnels available for your garden, from small to large. The smaller ones are typically easier to assemble than their larger counterparts. They also typically come with poles or metallic pins to secure the polytunnel to the ground.

Depending on your needs, you can buy small or large polytunnels for under $100. However, you should not buy these for long. You will want to invest in a longer-lasting polytunnel for a greater yield.


Polytunnels are a great way to protect crops from the harsh weather during winter. There are many different types of polytunnels available, but they are generally made of double-layer polythene reinforced with nylon mesh. This makes them more resistant to frost and wind and increases the insulating properties of the polytunnel. While reinforced polytunnels are more expensive than regular polytunnels, they can keep your crops warm and dry. However, they do not allow much light to reach your crops.

Another option for protecting crops from frost is to use straw mulch. Straw mulch is an excellent thermal insulator and can be used as compost inside your polytunnel. You can spread it evenly on the ground and it will keep the area warm during cold nights and cooler during hot days. Straw mulch is inexpensive and widely available.

Another option is a mini polytunnel. These can cover large areas and protect plants from the harsh weather. If you don’t need to protect your entire garden from frost, you can choose to buy a mini polytunnel that covers only part of it.


Regular maintenance is essential for polytunnels. Keeping them clean and dry is a must, and you can use a sponge and warm water to clean them. Regular ventilation is also important to keep them free of algae and mold. It’s a good idea to open the windows and vents every day to allow fresh air into the tunnel.

Regular maintenance will keep the polytunnel in good condition and extend its lifespan. Regular cleaning will help improve the air circulation in the polytunnel and will help retain heat and sunlight. The addition of ladybugs can help control pests and increase the life of the plastic covering.

During the winter months, polytunnels can protect crops from frost. Frost is one of the biggest threats to crops. When water freezes, it causes cell walls to break down and stunt plant growth. The damage can result in blackened and distorted plants. Supplemental heating is a good idea if severe frost is likely.