
If you're not planning on using your greenhouse during winter, it's a good idea to remove the plastic cover and store it in a cool, dry place, like a shed, to prolong its life. Some people even dismantle their entire plastic greenhouse when it's not in use. It's also important to consider using plastics with UV protection to avoid extra trips to the landfill.
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What You'll Learn

Store plastic cover indoors or in a shed
If you don't plan on using your greenhouse during the coldest, darkest, and windiest months, you can extend its lifespan by storing it away during this period. The best place to store your plastic cover is either indoors or in a shed—this will prevent rust damage to the frame.
Some people choose to completely dismantle their plastic greenhouse when it is not in use, but this is not necessary to prolong its life. If you do choose to keep your greenhouse structure up, you should remove the plastic cover and store it in a cool, dry place.
When storing your plastic cover, it is important to ensure that it is clean and free of any dirt, debris, or tears. Tears in the plastic can be mended, but it is important to do so as soon as they are noticed, as they will continue to grow if left unattended. Keeping your plastic cover in good condition will ensure that it provides cover for many years.
It is also worth noting that if you choose to keep your greenhouse up, you should take measures to protect the frame. For example, you can pass the plastic flaps under the frame and tape them to the inside of the cover, and then lightly mound earth around the base of the greenhouse, or weigh down the flaps with heavy weights.
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Store in a cool, dry place
If you want to store your greenhouse plastic, it is important to store it in a cool, dry place. This is the best way to ensure the longevity of your plastic. If you don't plan on using your greenhouse during the coldest, darkest, and windiest part of the year, then removing the plastic cover and storing it away is the easiest way of prolonging its life.
You should look for a place that is cool and dry, such as a shed, and keep the plastic there. This will protect it from the elements and ensure it doesn't deteriorate. It is also a good idea to choose a storage location that is protected from pests and rodents, as they could damage the plastic.
Additionally, when storing your greenhouse plastic, make sure that the area is well-ventilated to prevent the build-up of moisture, which could lead to mould or mildew. The storage area should also be clean and free of dirt, debris, and chemicals that could potentially damage the plastic over time.
When storing your greenhouse plastic in a cool, dry place, consider rolling or folding it neatly to avoid creases and cracks. You can also place it in a protective bag or cover to keep it clean and dust-free. By taking these steps, you will be able to maintain the quality of your greenhouse plastic for an extended period.
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Avoid rust damage to the frame
If you want to avoid rust damage to the frame of your greenhouse, it is recommended to remove the plastic cover during the winter months and store it indoors or in a shed. This will help to prolong the life of your plastic greenhouse. Additionally, some people choose to completely dismantle their plastic greenhouse when it is not in use, which can further extend its lifespan.
Another way to protect your greenhouse from rust damage is to pay attention to the plastic flaps around the base of the greenhouse. These flaps can allow a lot of wind to get inside, which can cause damage to the frame. To prevent this, you can pass the flaps under the frame and tape them to the inside of the cover. Alternatively, you can weigh down the flaps with heavy weights, such as bags of compost, paving slabs, breeze blocks, or bricks.
If you live in an area with strong winds, you may also want to consider securing your greenhouse to the ground. This can be done by using ground anchors and firmly strapping the entire greenhouse to the ground, cover and all. This will help to prevent the wind from lifting the greenhouse and causing potential damage to the frame, which could lead to rust.
By following these tips, you can help to avoid rust damage to the frame of your plastic greenhouse and extend its lifespan. Proper maintenance and storage of your greenhouse plastic and frame are key to ensuring its longevity.
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Dismantle when not in use
If you don't plan on using your greenhouse during the coldest, darkest, and windiest months, the easiest way to prolong the life of a plastic greenhouse is to dismantle it when not in use. Firstly, remove the plastic cover and store it indoors, in a shed, or in a cool and dry place. Then, you can dismantle the frame. Some people choose to leave the frame up and only remove the cover, but completely dismantling the greenhouse can help it last several years.
If you choose to leave the frame up, you can take some measures to protect it. Firstly, deal with the plastic flaps around the base of the greenhouse. These provide additional airflow but also allow wind to get in. You can pass the flaps under the frame and tape them to the inside of the cover, and then lightly mound earth around the base of the greenhouse. Alternatively, you can weigh down the flaps with heavy weights, such as bags of compost, paving slabs, breeze blocks, or bricks.
Another option for securing your greenhouse frame is to use ground anchors. You can dig these into solid ground and strap the whole greenhouse firmly to the ground. This will help your greenhouse withstand strong winds.
Dismantling your greenhouse when it is not in use and taking measures to protect the frame can help prolong its life and ensure that it stands strong for years.
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Avoid extreme temperatures
Plastic greenhouses are prone to extreme temperature fluctuations, especially during summer and winter. In this section, we will discuss some strategies to avoid extreme temperatures in your plastic greenhouse.
During the summer, it is important to increase airflow to prevent the greenhouse from overheating. You can do this by slightly lifting the bottom of the cover and securing it with string or tape, allowing more air to circulate. Consider adding an extra window or door to the rear or sides of the greenhouse to further enhance airflow. Heat-activated automatic windows are also a great low-effort solution, as they open and close automatically based on the temperature. Additionally, dampening the floor of your greenhouse with water can help increase humidity and provide a cooling effect as the water evaporates. Consistent watering of your plants is crucial for this purpose, as they release moisture through their leaves, helping to lower the temperature.
Shading can also be used to limit the amount of light and heat entering the greenhouse. Shade cloths or towels draped over the greenhouse can provide temporary relief during extreme heatwaves. For a more permanent solution, consider using heavy-duty shade netting with a density of around 50% to maintain a balance between sunlight exposure and temperature control.
In the winter, the focus shifts to retaining heat and protecting your plants from extreme cold. Insulation is key during these months, and you can use bubble wrap or horticultural fleece to cover the inside walls, trapping heat and reducing heat escape overnight. In very cold climates, a small greenhouse heater can be beneficial in maintaining a consistent temperature.
Proper positioning of your plastic greenhouse can also help regulate temperatures. In the winter, placing the greenhouse in a location with full sun exposure can increase daytime temperatures. Alternatively, a sheltered position with evening sun, filled with heat-absorbing materials like bricks or stone, can enhance overnight temperatures and minimise frost risk. During the warmer months, position the greenhouse to take advantage of morning sun while providing evening shade. This can help prevent extreme temperature build-up and damage to your plants.
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Frequently asked questions
Store your greenhouse plastic indoors, in a shed, or in a cool and dry place.
If you are storing your greenhouse plastic with the frame, make sure the frame is smooth to avoid excessive wear and tear to the plastic.
If you are not using your greenhouse during the coldest, darkest, and windiest part of the year, it is best to remove the plastic cover and store it separately.
You can remove the plastic cover from your greenhouse by dismantling the plastic greenhouse when it is not in use.
If you want to store your greenhouse plastic for an extended period, ensure that you choose a suitable storage location that is cool and dry to prevent damage and discolouration.











































