Connect with us


What Can You Not Grow In A Polytunnel?

What Can You Not Grow In A Polytunnel

In a polytunnel, you can grow a variety of different plants. You can grow vegetables for your dinner plate or fruits to enjoy as a dessert. You can also grow medicinal plants. Here are the most common plants you can grow in a polytunnel.


Having a polytunnel is a fantastic way to extend your growing season. While some vegetables are not suitable for a polytunnel, many varieties are suitable for this space. For example, you can grow fennel and other winter vegetables in the autumn and harvest them in the spring. You can also grow some plants that overwinter, such as garlic. These are planted in the autumn and remain dormant until the following spring.

Most crops can be grown in a polytunnel, but you must ensure that the temperature and humidity are suitable for them. Too much heat or humidity can lead to crop failure. Some vegetables, such as peppers and potatoes, require a minimum temperature of twelve degrees Celsius.


There are several types of fruit that cannot grow in a polytunneling environment. For instance, apricots are among the least hardy fruit trees in the UK, and late frosts can cause them to fall off in the early spring. You can avoid this by fan-training the trees, which can keep them well within the poly tunnel’s average height and width. In addition, you can also choose between Goldcott and Tomcot apricots, which are naturally compact.

Although a polytunnel is not the most productive way to grow fruit, it is a great way to grow vegetables all year round. However, before starting any gardening project, make sure to research the best season to plant different crops. You should also plan to rotate crops to ensure maximum yields. You should also be aware that some plants will grow better in a polytunnel than in a conventional garden. A polytunnel is not the best place to grow large fruit trees.


There are a number of herbs that are suitable for growing in a polytunnel. Many of these can be harvested fresh or dried. However, if you are new to herb growing, you should think carefully about how to store your harvest.

Herbs can be grown in a polytunnel, but you need to choose the right type for your particular polytunnel. For example, rosemary requires a free-draining growing medium and full sun, whereas basil needs a slightly moist environment. Parsley, on the other hand, needs a little shade.

Medicinal plants

The best way to grow medicinal plants in a polytunnel is to grow them in containers and then transplant them in a larger space. You can plant these medicinal plants in the polytunnel in the spring or summer. Medicinal plants grow well in a polytunnel and do not require a lot of water. The smell of rosemary is an added benefit of growing these plants in containers. Thyme repels cabbage worms and attracts hoverflies that keep aphids and other pests at bay.

Medicinal plants are a good choice for growing in a polytunnel if you have enough space and a good greenhouse. There are more than 4,000 different kinds of medicinal plants growing in Canada. Many of them have been used for more than 2,000 years, and could grow well in a polytunnel or greenhouse. These plants are unique due to their minimal breeding and cultural requirements. In addition to this, they have a close relationship with their natural environment.


A polytunnel is not an ideal environment for weeds to grow, but the weeds that do grow in these areas can be controlled using certain techniques. One of these methods is to use herbicides, which should be used as per instructions and federal laws. The herbicides should also be used in non-growing areas. This is because these chemicals can damage your crops and can spread weed seeds. It is also recommended to use pre-emergence herbicides as these are more effective at controlling the weed seeds.

You can also use grass clippings to enrich the soil. They contain plenty of nitrogen and other nutrients, but it is important to add grass clippings in thin layers, separated by cardboard. It is also best to mix grass clippings with other carbon-rich materials before adding them to the soil. This will help to create a balanced compost. This compost can then be used as an enrichment material in the polytunnel growing area.


Many crops can be grown in a polytunnel, though there are some that aren’t suitable for this type of growing space. It is important to check the temperature and humidity levels of your polytunnel. Temperatures that are too high or too low can damage your crops. The ideal temperature for your plants to grow at is around 12 degrees. Other plants such as peppers and potatoes should be planted at around 7 degrees. Planting in autumn or early winter will ensure that your plants stay healthy and strong through the coldest season.

While you may not be able to grow certain plants in a polytunnel, many vegetables can be grown in this space. Many are suitable for early autumn sowing, and will be ready for harvesting in spring. There are also some plants that can be overwintered, meaning they are planted in the autumn and remain dormant until the spring. Whether you want to grow a variety of vegetables or just want to try something new, there is no reason not to do so!