There are many benefits to using a polytunnel, or greenhouse, in your garden. Whether you need to grow plants out of season or overwinter sensitive plants, a polytunnel is an excellent choice. These structures are also ideal for cultivating exotic plants.
Polytunnels are easier to use
One of the advantages of polytunnels is that they’re easier to assemble and use. The material used to construct them is usually aluminum, which is cheaper and easier to work with. It’s also much more resistant to UV damage. The disadvantage of aluminum, however, is that it’s not as stable and will bend and break more easily in bad weather. Alternatively, you can opt for wooden frames, which are more durable and can last for a long time when built correctly. Just make sure to protect them from rot and other damages.
Another benefit of polytunnels is that you can grow herbs and other plants in them. They’ll stay fresh longer and repel pests, helping your other crops to grow. A polytunnel can also extend your growing season and delay frost.
They have better ventilation
Polytunnels and greenhouses have improved ventilation systems that can help prevent overheating and excessive humidity. These ventilating systems work by drawing fresh air into the greenhouse and releasing hot air out of the sides. Excessive heat can lead to the wilting of plants, which can then be damaged by diseases and fungal infections.
Proper ventilation is vital for growers as it prevents the development of fungal and mold disease. It also helps prevent overheating by exchanging hot air with cooler air. Many polytunnels have end doors that allow for good ventilation. Other methods for ventilation include roll-up vents, louvres, and side windows.
Before building a greenhouse, you should determine your requirements. If you plan to grow exotic plants and require a more visually appealing garden, a greenhouse is the best option. Otherwise, a polytunnel is more affordable and is easily expandable.
They are prone to damage
The biggest threat to polytunnels and greenhouses is wind. As poly tunnel and glass growers will attest, wind can be a devastating force for any structure. Under the right conditions, greenhouses can turn into a shambles. This can be especially true of the greenhouse coverings, which are more vulnerable to wind damage.
Although greenhouses are built to last, they require regular maintenance. Polytunnels, on the other hand, are easier to maintain and assemble. They can even be placed on rough ground. However, greenhouses require well-prepared foundations, which means they take more time to install.
The purpose of a greenhouse is to trap heat. It has an advantage in the summer, but is susceptible to drafts during the colder months. Plants can also be subject to sun damage in the winter, while polytunnels have a more balanced environment throughout the year. A polythene cover can also protect your plants from the harmful effects of ultraviolet rays and excessive cold in winter.