Large Polytunnel 8ft, 10ft or 12ft with Trench or Rail Base Options

A polytunnel creates a sheltered growing environment that helps plants perform better across a longer season. By covering crops with a protective structure, it helps raise temperatures, reduce exposure to harsh weather and support the growth of a wider range of vegetables, herbs and fruit.

These polytunnels provide a practical alternative to a traditional greenhouse while offering generous internal space for planting, tending and harvesting. The curved frame encourages airflow, while the cover helps retain warmth and diffuse light around the growing area.

Designed for home gardens, kitchen gardens, allotments and larger growing spaces, this range is available in multiple widths so you can choose the right setup for your site.

Widths Available Across This Polytunnel Range

Choose your polytunnel width, many choices  making it easier to select the size that suits your available space and growing plans.

• 8ft wide polytunnel
• 10ft wide polytunnel
• 12ft wide polytunnel

Each width is designed to provide a practical covered growing area with useful headroom and a layout suitable for a wide range of crops.

Cross bar kits can also be purchased as an additional extra to add extra support.

Base Type And Door Type Options

Each polytunnel is available in different base and door configurations, allowing you to choose the version that best suits your installation preferences and access requirements.

• Standard Door and Trench Base
• Sliding Door and Trench Base
• Standard Door and Rail Base
• Sliding Door and Rail Base

Trench Base Or Rail Base

Trench base versions are secured by burying the cover around the outer edge of the structure. This method creates a firm hold in the ground and is a common choice for permanent growing areas.

Rail base versions use base rails and anchor plates to secure the structure without the need to dig a trench. This option can make installation simpler while providing a strong and stable base.

Door Options For Access And Use

Depending on the variant selected, the tunnel is available with either a standard hinged door or a sliding door. This allows you to choose the entry style that best suits the space available around the tunnel and how you plan to use it throughout the season.

Benefits Of Using A Polytunnel

• Helps extend the growing season by creating a warmer environment for crops
• Protects plants from wind, heavy rain and sudden weather changes
• Supports stronger plant growth through improved warmth and light diffusion
• Allows earlier sowing in spring and later harvesting into autumn
• Provides a more controlled space for vegetables, herbs, fruit and seedlings
• Reduces damage to crops from exposure and unsettled outdoor conditions
• Offers a cost effective alternative to a greenhouse for larger growing areas

Strong Galvanised Steel Frame

The framework is made from galvanised steel tubing designed for outdoor use. The hoop structure provides strength and stability while helping the tunnel maintain its curved shape in changing weather conditions.

The galvanised finish helps protect the metal against rust, making it suitable for long term use in productive garden environments.

Protective Polytunnel Cover

The cover is designed to allow a high level of light into the tunnel while also helping to spread that light across the growing area. This creates a more even environment for plants and supports healthy development across the full length of the structure.

The material is UV stabilised for outdoor durability and helps retain warmth inside the tunnel, making it especially useful during cooler periods of the growing season.

Suitable For A Wide Range Of Crops

Polytunnels are ideal for gardeners looking to grow more produce over a longer season. They are commonly used for crops that benefit from warmth, shelter and protection from wet or windy weather.

Suitable crops can include tomatoes, cucumbers, peppers, chillies, herbs, salad leaves, strawberries and many other fruit and vegetable plants.

What Is Included

Each polytunnel includes the main structural components needed to build the growing space.

• Galvanised steel hoop frame
• Polytunnel cover
• Door and frame components
• Fixings and hardware
• Anti hot spot tape
• Assembly instructions

Installation Information

The polytunnel is supplied flat packed for assembly. Installation is usually easier with two people and standard tools. Trench base models require ground preparation around the perimeter, while rail base models are secured using rails and anchor plates.

Once installed, the structure provides a practical protected space for growing through more of the year.

Key Features

• Available in 8ft, 10ft and 12ft widths
• Choice of trench base or rail base
• Choice of standard door or sliding door
• Galvanised steel frame construction
• UV stabilised cover for outdoor growing
• Suitable for vegetables, herbs, fruit and seedlings
• Designed for gardens, allotments and productive growing space