Can I build a DIY poly tunnel for growing beans?
Aug 26, 2026
Sure, you want to grow beans but unsure if you can build a DIY poly tunnel for them? As a DIY poly tunnel supplier, I've got all the info you need to pull this off.
First off, the benefits of using a poly tunnel for growing beans are massive. Beans are warm - loving plants. A poly tunnel creates a controlled environment where you can keep the temperature, humidity, and light just right. You get to start your bean plants earlier in the season when it's still too cold outside. This gives you a head start and can lead to a longer and more productive growing season.
Now, can you actually build a DIY poly tunnel? Absolutely! It's not as hard as you might think. There are a bunch of poly tunnel kits available that make the process super easy. For example, our Small Polytunnel for Home Use Kit (10ft Polytunnel) is perfect for those who want to start small. It comes with all the parts you need, like the frame, the plastic cover, and the connectors. Even if you're not a DIY expert, you can put it together with basic tools and a bit of patience.
If you have a larger space and want to grow more beans, our Large Polytunnel Professional Kit (20ft Wide) is a great choice. It's sturdier and gives you more room to plant rows of beans. The professional - grade materials ensure that it can withstand different weather conditions, whether it's strong winds or heavy rain.
Before you start building, you need to pick the right location. Beans need plenty of sunlight, so find a spot in your garden that gets at least 6 - 8 hours of direct sunlight every day. Make sure the ground is relatively flat too. You don't want your poly tunnel on a slope, as it can cause water to pool in one area and make the structure unstable.
Let's talk about the materials. Most poly tunnels use a steel or aluminum frame. Steel frames are strong and durable, but they can rust if not properly treated. Aluminum frames, on the other hand, are lightweight and resistant to rust. The plastic cover is usually made of polyethylene. It's clear or slightly tinted, allowing sunlight to penetrate while keeping the heat inside.
When you're setting up the frame, follow the instructions that come with your kit. Usually, it involves connecting the frame pieces together. You might need a drill and some screws for a more secure fit. After the frame is up, carefully drape the plastic cover over it. Make sure it's tightly secured around the edges so that no wind can get under it. You can use clips or ropes to hold the plastic in place.
Now, once your poly tunnel is up and running, it's time to plant your beans. There are different types of beans, like bush beans and pole beans. Bush beans are more compact and don't need a lot of support. They're great for smaller poly tunnels. Pole beans, on the other hand, grow tall and need a trellis or some kind of support structure inside the poly tunnel. You can use bamboo poles or a wire mesh for the pole beans to climb on.
Inside the poly tunnel, you can also control the watering. Beans like moist soil but not water - logged. You can use a drip irrigation system to ensure that the water goes directly to the roots. This helps save water and keeps the foliage dry, reducing the risk of diseases.
Another important aspect is ventilation. Even though you want to keep the heat inside, you also need to let fresh air in. You can install vents on the sides or at the top of the poly tunnel. Open them on warm days to prevent the temperature from getting too high. This also helps with pollination, as it allows bees and other pollinators to enter the tunnel.
We also offer a variety of other poly tunnel kits. Our Poly Tunnel Greenhouse Kits come in different sizes and configurations, so you can choose the one that best suits your needs. The Walk In Polytunnels Steel Frame Kit is great if you want easy access to your bean plants for maintenance and harvesting. And if you have a really small space, our Mini Polytunnel Greenhouse Kit is a cute and practical option.


In conclusion, building a DIY poly tunnel for growing beans is totally doable. With the right kit, a good location, and some basic gardening knowledge, you can have a great bean - growing season. Whether you're a beginner gardener or an experienced one, our poly tunnel kits can help you achieve your gardening goals.
If you're interested in any of our poly tunnel kits and want to discuss your specific needs, feel free to reach out. We're here to help you select the perfect kit, answer any questions you might have, and provide all the support you need during the building and growing process.
References
- "The Vegetable Gardener's Bible" by Edward C. Smith
- Various horticultural research papers on protected cultivation in poly tunnels.
