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How To Keep A Polytunnel Warm In Winter

How To Keep A Polytunnel Warm In Winter

During the cold months, there are many things to consider when you want to keep your polytunnel warm. These include the use of a heat pump, proper ventilation, and insulation. By incorporating these tips into your polytunnel, you can ensure that your plant nursery is warm and inviting during the coldest seasons of the year.


Adding insulation to keep a polytunnel warm in winter can keep plants alive and healthy. Temperatures inside a polytunnel vary greatly during the night. You can also heat your polytunnel using inexpensive methods.

To help maintain a positive temperature inside your polytunnel, use a layer of bubble wrap to prevent heat loss. Wrap it around the polytunnel and tie it to the polythene cover with string. This can also prevent cold draughts.

You can also add a hot bed to your polytunnel for plants that need a warmer climate. This can be made of decomposing straw or other organic material. This material releases heat slowly at night, which can keep the polytunnel warmer than the rest of the greenhouse.

You can also use frost fabric to increase the insulation of your polytunnel. This fabric allows irrigation to flow freely into the polytunnel, but keeps the temperature inside the polytunnel stable.

The type of polythene you choose to use for your polytunnel can vary. The better the polythene, the longer the polytunnel will last.

Ground-source heat pump

Using a ground source heat pump is a great way to keep a polytunnel warm in winter. You can also use a solar heating system to keep your soil warm all year round. You can also place a mini greenhouse inside your polytunnel for extra protection.

It’s important to understand that the most efficient way to heat your polytunnel is to provide the right amount of temperature to the plants. A good way to do this is to group the plants that need the most heat together.

It’s also a good idea to use bubble wrap to insulate the polytunnel. This can help to prevent icy draughts. You can use UV stabilised bubble wrap. It also acts as an insulation curtain, which will help to keep the heat inside.

You can also place candles inside your polytunnel to add to the warm feel. You can also place large rocks inside your polytunnel to absorb the sun’s energy during the day. At night, the rocks will slowly release heat.

Proper ventilation

Having proper ventilation to keep a polytunnel warm in winter is vital for maintaining the health of your plants. Excess heat can make it hard to grow healthy crops. In addition, excess humidity can be dangerous to your plants.

The proper layout of your polytunnel is also important. The layout should be designed to maximize the growing space. It should also be placed in a protected area.

Ventilation is also important during the summer months. The temperature inside a polytunnel can vary greatly throughout the day and night. If the polytunnel does not have good ventilation, it can cause excess heat and humidity.

For maximum temperature retention, you can add insulation. In addition, you can use a polythene cloche to keep the polytunnel cool and protect your plants.

You can also add a layer of woven fleece material over the plants. This material drapes over the wires and creates a false ceiling. It can be secured using string or cable ties.

Temperature difference

Using polytunnels to grow plants in winter is a great way to extend the growing season. While most plants cannot tolerate the cold temperature, they can grow in a polytunnel, where the temperature is maintained at a warm level.

In winter, the temperature inside a polytunnel can rise to as high as 85 degrees. This is ideal for tender plants. However, plants need light to grow healthy. Using polytunnels for winter gardening in the UK will allow gardeners to have access to light for their plants, while at the same time maintaining a warm environment.

The temperature inside a polytunnel will depend on the quality of the polythene and the frame used to make the tunnel. There are different types of polythene available, and the quality of the polythene will determine how long a polytunnel will last.

The frame material used to construct a polytunnel can be aluminum, steel or wood. Aluminum is a good choice because it does not corrode. However, steel is stronger and more durable, but it can break easier in the case of strong winter weather. Wood is also a good choice, but it needs to be treated properly to keep it from rotting.