Extra Large (20+ Ft. D) Greenhouses On Sale

A large open design, this Outsunny 3 x 2m polytunnel greenhouse offers plenty of room for plants and more. Walk in and walk out - it's that spacious. A galvanised steel frame for a strong core, it comes with a two-layer mesh cover to create safe shelter inside; the middle reinforcement makes the cover extra tough. A large door for easy access, with six windows to bring fresh air in easily. Set comes with 4 x ground stakes, 4 x guy ropes, 6 x plant labels and 1 x pair of gloves.- Reinforced and galvanised steel frame for a strong, stable structure; - Centre reinforced plastic cover: holds in place, creates a safe shelter; - Roll-up door and six windows for easy access inside and ventilation. Mesh screen to keep bugs away; - 15cm other edge to bury cover into soil; - 4 x ground stakes, 4 x guy ropes, 6 x plant labels and 1 x pair of gloves included; - Assembly required, 3-4 people recommended;- Colour: White, Grey; - Material: Galvanised Steel, 140 GSM PE, Polyester; - Overall Dimensions: 296L x 200W x 200Hcm; - Side Window Dimensions: 47W x 40Hcm; - Outer Door Dimensions: 110W x 170Hcm; - Inner Mesh Door Dimensions: 90W x 185Hcm; - Windproof Level (when fully fixed): Level 5-6; - Item Label: 845-921V02WT;

The metal framework and the cover were all in the one box. I had been told there would be 2 deliveries. So today I opened up the package and hey presto it was all there. Thank you all. Well done.. David. Scarborough. Wed Apr 15 2026

Put up and start growing a garden of greenery: look to this Dakota Fields 2.5 x 2m garden polytunnel greenhouse. A spacious and open inside design, there's plenty of room to grow a variety of vegetables, flowers and more; how about bringing in shelves too for easy organisation? A steel frame for a strong standing structure, with metal rods for extra support. Use the included guy ropes and ground stakes to pin structure to ground. Complete with four mesh windows and large roll-up door.- Walk-in design: open inside for plenty of growing room;- Four mesh windows for ventilation. Roll-up to stay in place. Large roll-up door for easy access;- Steel frame for a strong standing structure;- Protective plastic cover, with 15cm extended edges: bury in the soil for extra stability;- Metal frame support rods, guy ropes and ground stakes included;- Assembly required;- Colour: Green; - Material: Steel, PE; - Overall Dimension: 2.5L x 2W x 2Hm; - Window Size: 47L x 40Wcm; - Door Size: 107W x 172Hcm; - NOTE: 1. The roofs are not designed to hold loads of standing water or snow. You must keep the roof material properly tight; 2. Please put away the cover in case of heavy snow, strong wind and heavy rain.

Really happy with item just as described , perfect for what I want . Would recommend.. Anonymous. Mon Jul 27 2026

Perfect for the home gardening enthusiast, looking for a way to grow and nurture plants from the summer through to winter. Six windows to let in the air at different parts of the tunnel, it also comes with a zipped door for easy access in and out. Vegetables, flowers, fruits and plants beyond, this is a fantastic place to let your fingers become greener than ever before. Large zipped door for access.

Perfect for all my needs in potting and growing fruit and veg and flowers . Thanks. Peter. Trillick, Dub. Wed Jun 07 2023

Great green house metal shelving good size. Not the beat for hard standing area as it only has tent pegs and string to hold it down. We have screwed it to the floor . Would highly recommend this to anyone who fancies growing their own food and becoming more self sufficient specially with all the prices going up. Anonymous. Mon Apr 04 2022

This garden polytunnel greenhouse form is composed of durable PE cloth over a selected galvanised steel frame. Thanks to solar energy, it can maintain consistent temperatures that is ideal to plant growth. The durable PE cover protects the plants from cold, light rain and pests. The two rows windows on either side are suitable for ventilation, also they work for water gathering on rainy days. In this greenhouse, all your vegetables, flowers, fruits will flourish.- Poly tunnel greenhouse, ideal to extend your plants growing season no matter where you live; - Built form galvanised steel tube frame and PE cloth in "tunnel" style; - Powder coating galvanised steel frame provides a durable, stronger and corrosion resistant structure; - Full closed cover maintains higher humidity levels for growing tropical plants, vegetables and herbs; - Tear-resistant cover ensure all your plants are protected from cold, light rain, birds and pests; - Large door provides easier access for gardeners to enter this greenhouse; - Two rows of windows on either side for better ventilation, which can also be fastened up on rainy days for water gathering; - 4 mesh windows for cross ventilation; Note: Please put away the cover in case of heavy snow, strong wind and heavy rain;- Colour: White; - Materia: Galvanised Steel, PE; - Product Dimension: 200W x 245D x 198H cm; - Net Weight: 11 kg; - Flat Pack: YES; - Window Size: 45W x 42H cm; - Door Size: 107W x 190H cm; - Item Label: 84H-191V00WT; - NOTE: Not suitable for bad weather conditions;

Great little polytunnel. Anonymous. Fri Apr 11 2025

This Outsunny garden greenhouse is perfect for home gardening! The plant greenhouse offers all the protection your plants need to thrive. The steel frame and PE cover of the plant nursery will keep your plants secure. The windows with interior netting of the hot house offer excellent ventilation, while the convenient roll-up doors design provides easy access to the inside. Our Outsunny greenhouse is the ideal solution for keeping your plants happy and healthy throughout the year.- The PE cover is coated with UV protection to better protect plants. 6 side windows ensure better air circulation. Easy to control temperature and sunlight with roll-up doors. - Ideal for growing tropical plants, vegetables, fruit, flowers and more. Galvanized steel pipe for stability and durable use. The structure is stable with 7 crossbars and 2 reinforced inclined bars. Assembly required.

Perfect for what we wanted. Easy to assemble and love the option to let air in.. Fiona. Buxton, GB. Fri Jun 28 2024

This mini greenhouse in Green uses a Steel frame and cover for growing plants, flowers, vegetables and seedlings. Keep plants protected from cold, light rain, and mild wind, whilst allowing vital sunlight through to nourish and nurture. Powder coated for extra strength, holds in place.

This Dakota Fields 15x10ft greenhouse is perfect for every gardening enthusiast, who is looking for a way to stay in the soil all year round! The plant greenhouse offers all the protection your plants need to thrive without having to spend a great deal of green yourself. The steel frame and PE cover create a safe, protective shelter for all your plants. The six windows, with netting, allow fresh air inside, whilst the roll-up door gives easy access.- Large, walk-in design, protects plants from weather and nature (like birds)- Galvanized steel frame, structure is strong and tough.- Six mesh-lined windows and mesh zipped door.- Protective PE cover, with 15cm extended edges.- Assembly required, four guy ropes and four ground pegs included.- Color: Green.- Material: Galvanized Steel, PE.- Overall Dimension: 447L x 300W x 200Hcm.- Window Size: 46L x 36Wcm.- Door Size: 170W x 173Hm.- Windproof Level: 3-4.- Item Label: D2BCA4B918634D0FA226435A52105B47.- NOTE: Please do not use acidic farm chemical to avoid chemical reactions with the alkaline PE cover, which result in breakage.

Large Tunnel Greenhouse: The Loyal Guardian of Your Plants：Constructed with thickened galvanised steel pipes and a robust PE cover, this tunnel greenhouse ensures durability and stability. Featuring three top beams to prevent snow buildup and reinforced side braces for enhanced stability, it stands strong against harsh weather. The UV-resistant, cold-proof, and waterproof PE cover, along with mesh windows to keep insects out, provides an ideal environment for your plants. With spacious dimensions, multiple windows for ventilation, and adjustable Velcro windows, it keeps the airflow optimal and protects your plants for healthy growth.

Envy of the neighbours at the moment, plants are enjoying the humidity and warmth despite the plunge in temperatures as well a howling winds. There are a few joints that can be reinforced with strength. Let's see how much heat it can retain and its durability against Midwest Snow.. Lin. Hancock, Ohio. Wed Oct 29 2025

This replacement cover in Green uses a PE frame and cover for growing plants, flowers, vegetables and seedlings. Each window rolls up and holds in place with the fasteners. Plastic greenhouse cover ensures the inside is protected from light rain and light wind whilst keeping the heat trapped the conditions for healthy growth all year round.

I am delighted with this greenhouse. It’s even more sturdy & roomy than I thought it would be. I highly recommend this product.. Jane. Thatcham, GB. Sun Nov 08 2020

This walk-in greenhouse in Green uses a Steel frame and cover for growing plants, flowers, vegetables and seedlings. A small-medium piece, polytunnel greenhouse is a space to grow plants and vegetables in smaller spaces. To access inside walk-in greenhouse rolls up and fixes in place.

Maximise your gardening potential with the Mercia 8 x 4 Woodsman Pent Lean-To Greenhouse, the ideal solution for those with limited space or smaller gardens. This practical greenhouse is designed to be placed against a wall, making it a perfect option for homes where space is at a premium but you still want the benefits of a functional greenhouse. The glazing offers an excellent balance between cost and performance, providing a durable, UV-protected surface that helps retain warmth and protect your plants from harsh weather. While not as high-end as glazing, is a practical choice for those who want reliable performance at a more affordable price. The premium 2"" x 2"" framing ensures the greenhouse has a solid, stable structure, designed to hold up over time even in challenging weather conditions. The opening roof vent allows for improved air circulation, making it easier to regulate the temperature and humidity inside the greenhouse, helping your plants thrive. The high-quality ironmongery gives the greenhouse a charming, traditional look, while the watertight shiplap cladding ensures that your greenhouse remains secure and protected from the elements, keeping it dry and functional. Manufactured from sustainable and certified timber, the Mercia 8 x 4 Woodsman Pent Lean-To Greenhouse is built with the environment in mind. Plus, it comes with a 15-year anti-rot guarantee, so you can enjoy peace of mind knowing that your greenhouse is made to last. Easy-to-follow instructions make assembly simple, ensuring you can quickly set up your new greenhouse and start planting in no time. Compact yet functional, the Mercia 8 x 4 Woodsman Pent Lean-To Greenhouse is the perfect solution for anyone looking for a reliable, space-saving greenhouse that doesn’t compromise on quality. Whether you're a seasoned gardener or just starting out, this greenhouse offers the practicality and value you need to grow your garden with ease.

This walk-in greenhouse in White uses a Steel frame and cover for growing plants, flowers, vegetables and seedlings. Reinforcement grid through the middle to prevent tearing, protecting users' plants longer. Prevent sagging, water doesn't build up.

This walk-in greenhouse in Green uses a Galvanised Steel frame and cover for growing plants, flowers, vegetables and seedlings. Please do not use acidic farm chemical to avoid chemical reactions with the alkaline PE cover, which result in greenhouse tunnel breakage.

This walk-in greenhouse in Green uses a Steel frame and cover for growing plants, flowers, vegetables and seedlings. Galvanised for extra strength, with four support slants for added stability. Plenty of open growing room for plants, vegetables, fruits, flowers.

This spacious walk-in polytunnel greenhouse provides flexible growing space with reinforced framing and multi-opening ventilation for garden planting.

Go green and help nature flourish by expanding your gardening repertoire with a greenhouse. The Growzilla provides the perfect space to combine the natural benefits of growing with modern gardening techniques, giving you greater control over your plants and growing environment. From nurturing young seedlings to cultivating fruit, vegetables, herbs and flowers, it offers an ideal environment to grow more, experiment more and make the most of your garden.

Protect your plants from the elements with the 6m x 3m polytunnel. Create your very own microclimate providing higher temperatures and humidity for fruit, vegetables and any other plants you are growing outside of their usual season. Waterproof and windproof this polytunnel is the perfect solution to protect your crops, giving them the best start in life. The extra guide ropes and bracing bars at both ends give increased stability for those windy days! In the warmer seasons, your plants will also be shielded from strong damaging sunlight with the UV protection provided by the thick PE cover. Despite the strong frame, this polytunnel is easy to build giving you the option to put it up temporarily when needed. With doors at both ends access is easy, making tending to your plants as convenient as possible. With this amazing gardening solution, the weather won’t stop your green fingers!

This spacious greenhouse has a total surface of 5,74 m². It can accommodate a considerable number of plants, vegetables or fruits. This solid greenhouse is made of double-walled polycarbonate panels, which makes it UV resistant and thermally insulated. It can withstand temperatures from -20°C up to 70°C and thus create your own greenhouse effect for the best results when growing. Consequently, it makes for a warm temperature and increased humidity inside. The greenhouse has a sturdy and maintenance-free aluminium construction for extra stability. The gutter system drains water effectively and the two roof vents ensure optimum ventilation on hot days. The roof window is designed with sliding function to ensure easy installation which makes this greenhouse stronger than those with clips. No fundament is required for the slide. The assembly is easy due to the required installation accessories included in delivery. Please note that the roof of our greenhouse cannot withstand heavy snowfall. Warning: The greenhouse is not a construction building or conservatory, intended for leisure purposes. It is an impermanent standalone agricultural installation intended for hobby gardening only.

I haven't set up the greenhouse yet, but I think the greenhouse could have stronger corners ... thanks. Albinas. Wisbech, GB. Wed Jan 01 2020

Go green and help nature flourish by expanding your gardening repertoire with a greenhouse. The Growzilla provides the perfect space to combine the natural benefits of growing with modern gardening techniques, giving you greater control over your plants and growing environment. From nurturing young seedlings to cultivating fruit, vegetables, herbs and flowers, it offers an ideal environment to grow more, experiment more and make the most of your garden.

Go green and help nature flourish by expanding your gardening repertoire with a greenhouse. The Growzilla provides the perfect space to combine the natural benefits of growing with modern gardening techniques, giving you greater control over your plants and growing environment. Including 1 x shelving pack, you have additional space to organise and display your plants, seedlings, herbs and gardening essentials. From nurturing young seedlings to cultivating fruit, vegetables, herbs and flowers, the Growzilla offers an ideal environment to grow more, experiment more and make the most of your garden.

Go green and help nature flourish by expanding your gardening repertoire with a greenhouse. The Growzilla provides the perfect space to combine the natural benefits of growing with modern gardening techniques, giving you greater control over your plants and growing environment. Including 1 x shelving pack, you have additional space to organise and display your plants, seedlings, herbs and gardening essentials. From nurturing young seedlings to cultivating fruit, vegetables, herbs and flowers, the Growzilla offers an ideal environment to grow more, experiment more and make the most of your garden.

Growing plants, flowers and vegetables in smaller spaces comes easy with this Marlow Home Co. plant tent. A galvanised steel frame means a strong core, fitted with a tear-resistant mesh cover for the shield. Features a zipped door for easy access; it rolls up to stay in place whenever you need it to stay put.- Helps protect your growing vegetables and crops from animals, a safe shield; - Zipped door for easy access inside; - Tear-resistant mesh cover for a protective shield; - Insert to the ground for stability; - 1-2 people for assembly

Fits perfect looks great. Michelle Mckenna. Brighton East Sussex. Tue Jun 16 2026

This plant protection cage in Green uses a Steel frame and cover for growing plants, flowers, vegetables and seedlings. A large plant protection cage keep plenty of plants. Sides and roof provide shelter for this brassica cage.

This polycarbonate greenhouse is ideal for growing fruits and vegetables. It creates a favourable environment for crops by protecting them in winter and promoting their growth during the summer.

This has to be the worst purchase I've ever made. Had to phone the company up because there was no instructions with it. They sent them by email all you get are pictures not very clear at all. Just spent 6 hours trying to put it up and haven't even completed one side don't know how we're going to manage it. I want to send it back.. Carol. Wallsend, GB. Mon Jan 24 2022