Greenhouses

A greenhouse extends your growing season, protects tender plants from frost and gives you a sheltered space to start seedlings weeks before they could survive outdoors. Whether you are growing tomatoes, peppers, herbs or flowers, having somewhere warm and dry to work makes the whole process easier and more productive.

 

Our range includes walk-in greenhouses, compact models for smaller gardens and balconies, and polytunnels that cover larger growing areas at a lower cost. Materials include polycarbonate panels, PE mesh covers and aluminium or steel frames designed to handle wind and rain.

 

Free UK mainland delivery on all greenhouses, arriving in 3-5 working days. No hidden charges.

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Outsunny 3 Tier Greenhouse Garden Cold Frame Plant Flower Growth 129.5L x 58W x 140H cm - Greenhouse
Outsunny
£143.51 £152.75
-6%

Receives in 5 days.

Outsunny Reinforced Walk In Polytunnel Greenhouse 6M By 3M Steel Frame Ideal For Year Round Gardeners - Greenhouse
Outsunny

£180.47

Receives in 5 days.

6 x 4ft Polycarbonate Greenhouse Aluminum Roof Vent, Rain Gutter Sliding Door, by Outsunny
Outsunny

£208.48

Receives in 5 days.

Outsunny Polycarbonate Walk-In Garden Greenhouse Aluminium Frame w/ Slide Door 6 x 6ft - Greenhouse
Outsunny

£286.87

Receives in 5 days.

Outsunny 3-tier Wood Greenhouse Plant Storage Shelf Garden Cold Frame Grow House - Greenhouse
Outsunny
£63.91 £67.70
-6%

Receives in 5 days.

Premium Polytunnel 6m x 3m Racking Garden by Monster Shop
Monster Shop

£364.99

Receives in 5 days.

Heavy Duty Polytunnel 4m x 2m x 2m With Shelving For Home Gardeners And Urban Growers by Monster Shop
Monster Shop

£234.99

Receives in 5 days.

Monster Shop Heavy-Duty Polytunnel 3m x 2m Racking Gardeners - Uncategorized Greenhouse
Monster Shop

£199.99

Receives in 5 days.

Monster Shop Quality Polytunnel 19mm 4m x 2m Racking Gardeners - Uncategorized Greenhouse
Monster Shop

£219.99

Receives in 5 days.

Monster Shop GreenGrow Polytunnel 19mm 3m x 2m Racking Garden - Uncategorized Greenhouse
Monster Shop

£184.99

Receives in 5 days.

EcoGarden Polytunnel 2.5m x 2m 19mm Frame With Racking For Home Gardeners Year Round by Monster Shop
Monster Shop

£194.99

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Polytunnel Greenhouse 6m X 3m 25mm Frame Durable Cover For Home Gardeners All Season Growing by Monster Shop
Monster Shop

£339.99

Receives in 5 days.

Premium Polytunnel 25mm Frame 4m x 2m Greenhouse with Zip Door and Mesh Windows for Easy Growing by Monster Shop
Monster Shop

£128.24

Receives in 5 days.

Monster Shop Heavy Duty Polytunnel 3m x 2m 25mm Gardeners - Uncategorized Greenhouse
Monster Shop

£113.99

Receives in 5 days.

Monster Shop Heavy Duty Polytunnel 19mm 4m By 2m Waterproof Windproof All Season Outdoor Gardening - Uncategorized Greenhouse
Monster Shop

£123.24

Receives in 5 days.

Monster Shop Pro Polytunnel 3m x 2m Enclosed for Gardeners - Uncategorized Greenhouse
Monster Shop

£118.74

Receives in 5 days.

Monster Shop Pro Polytunnel 19mm 2.5m x 2m QuickSet Gardeners - Uncategorized Greenhouse
Monster Shop

£118.99

Receives in 5 days.

Outsunny

From £93.64

+2

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Outsunny

From £72.35

+2

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Unbranded Outsunny Walk In Greenhouse 8x12 Ft With Polycarbonate Panels And Double Sliding Door For Gardeners - Greenhouse
Unbranded

£471.67

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Outsunny

From £247.67

+3

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4x3x2m Tunnel Greenhouse Walk-In Hot House Roll Up Door & 6 Windows-Green by Outsunny
Outsunny
£101.47 £107.49
-6%

Receives in 5 days.

Outsunny 6 x 6ft Walk-In Polycarbonate Greenhouse with Foundation Window Silver by Outsunny
Outsunny

£266.71

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Outsunny 10x6ft Aluminium Greenhouse with/ Door Window Galvanised Base PC Panel by Outsunny
Outsunny
£326.08 £331.30
-2%

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Outsunny 6x6ft Aluminium Greenhouse with/ Door Window Galvanised Base PC Panel by Outsunny
Outsunny
£258.88 £263.16
-2%

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Outsunny 8x6ft Aluminium Greenhouse with/ Door Window Galvanised Base PC Panel by Outsunny
Outsunny

£314.87

Receives in 5 days.

Outsunny Walk-in Garden Greenhouse Zippered Roll Up Door & 6 Windows, 3.5 x 3 x 2m, Green - Greenhouse
Outsunny

£92.51

Receives in 5 days.

3 x 3 x 2 m Polytunnel Greenhouse Pollytunnel Tent w/ Steel Frame White by Outsunny
Outsunny

£111.85

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3.5 x 3 x 2 m Polytunnel Greenhouse Polytunnel Tent w/ PE Cover Green by Outsunny
Outsunny

£86.92

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6 x 3 x 2 m Polytunnel Greenhouse Pollytunnel Tent w/ Steel Frame White by Outsunny
Outsunny

£181.60

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Greenhouses and Polytunnels

Walk-in greenhouses give you room to stand, move around and tend your plants without crouching. They typically feature shelving on one or both sides for pots and seed trays, with a zip-up door for easy access and ventilation. Polycarbonate panels let light through while insulating better than single-pane glass, which helps keep temperatures stable during cold snaps.

Polytunnels use a steel frame covered with UV-stabilised PE mesh, creating a large growing area at a fraction of the cost of a glass greenhouse. They are popular with allotment growers and anyone who needs to cover a bigger plot. Roll-up sidewalls provide ventilation on warmer days and make watering and harvesting straightforward.

Picking the Right Size

Think about what you want to grow and how much space you have. A compact greenhouse on a balcony can handle herbs, chillies and small salad crops. A full-size walk-in gives you room for tomatoes, cucumbers and longer-season vegetables. Polytunnels are the way to go if you need to cover a larger area for rows of crops.

Check the footprint dimensions against your available space, and make sure there is enough clearance around the structure for access and airflow. All dimensions and frame specifications are listed on each product page.

All greenhouses and polytunnels ship with free UK mainland delivery in 3-5 working days.

Greenhouses

  • What types of greenhouses do you offer?

    We stock polytunnel greenhouses, polycarbonate models, and cold frames in various sizes. Options range from compact cold frames for small spaces to large walk-in polytunnels up to 6x3m. We also offer raised bed greenhouse combinations for integrated growing solutions.

  • What's the difference between polytunnel and polycarbonate greenhouses?

    Polytunnels use PE plastic covers over steel frames and are more affordable, whilst polycarbonate greenhouses feature rigid aluminium frames with durable polycarbonate panels. Polycarbonate offers better insulation and longevity, whilst polytunnels provide excellent value and easy replacement covers.

  • What sizes are available for walk-in greenhouses?

    Our walk-in models range from 3x3m up to 6x3m, with heights typically around 2m. Popular sizes include 4x3m, 3.5x3m, and 6x3m options. All walk-in models feature zippered doors and windows for proper ventilation and easy access.

  • Do your greenhouses come with ventilation features?

    Yes, most models include built-in ventilation systems. Walk-in polytunnels feature roll-up doors, side windows, and mesh vents, whilst polycarbonate greenhouses include roof vents and louvre windows. Many models offer adjustable ventilation to control temperature and humidity.

  • Are foundations or bases included with the greenhouses?

    Polycarbonate greenhouses typically include galvanised steel base frames for stability and anchoring. Polytunnels require ground anchoring using the included pegs and guy ropes. Cold frames and smaller models usually sit directly on level ground or can be placed on prepared bases.

  • What assembly is required for these greenhouses?

    Most greenhouses arrive flat-packed with full instructions. Polytunnels typically take 2-4 hours to assemble, whilst polycarbonate models may require 4-8 hours depending on size. Basic DIY skills and common tools are sufficient, though some larger models benefit from two people for assembly.

  • Can I use these greenhouses year-round?

    Yes, our greenhouses extend your growing season significantly. Polycarbonate models provide better winter insulation, whilst polytunnels offer excellent spring/summer/autumn protection. Cold frames are perfect for winter hardy crops and early spring starts. Proper ventilation prevents overheating in summer months.

  • What's included with delivery and how long does it take?

    We offer free delivery to UK mainland addresses, with your greenhouse arriving within 3-5 working days of ordering. Each greenhouse comes with all necessary components, assembly hardware, and clear instructions. The packaging protects all parts during transit, ensuring everything arrives ready for assembly.

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