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🚚 Free UK Delivery on All Orders | 60-Day Free Returns | Secure Checkout
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Outsunny Greenhouses

Outsunny Greenhouses — Mini, Walk-In, Polycarbonate & Polytunnel Greenhouses

Outsunny greenhouses extend your growing season and protect plants from the unpredictable British weather. Choose from compact mini greenhouses for balconies and patios, spacious walk-in models, polycarbonate greenhouses for superior insulation, lean-to designs, and large polytunnel greenhouses for serious growers. Easy to assemble with all fixings included. Free delivery to mainland UK.

Original price £83.99
Original price £83.99 - Original price £83.99
Original price £83.99
Current price £61.99
£61.99 - £61.99
Current price £61.99

Walk In Tunnel Greenhouse, Roll-up Door, 2.5x2m, White

in stock

Looking to extend your growing season? This large walk-in greenhouse is perfect for garden hobbyists, green fingers, and those looking to gro...

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Original price £83.99
Original price £83.99 - Original price £83.99
Original price £83.99
Current price £61.99
£61.99 - £61.99
Current price £61.99
Original price £95.99
Original price £95.99 - Original price £95.99
Original price £95.99
Current price £79.99
£79.99 - £79.99
Current price £79.99

Walk in Tunnel Greenhouse, Grow Flowers, Plants, 8x6.5ft

in stock

Are you ready to take your gardening to the next level? The Outsunny Walk-in Greenhouse is the perfect way to extend your growing season and ...

View full details
Original price £95.99
Original price £95.99 - Original price £95.99
Original price £95.99
Current price £79.99
£79.99 - £79.99
Current price £79.99
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Discover Our Outsunny Greenhouses Collection

Outsunny greenhouses extend your growing season and protect plants from the unpredictable British weather — giving you control over growing conditions year-round. Whether you're nurturing seedlings on a balcony or cultivating vegetables in a large garden, there's an Outsunny greenhouse to suit your space and ambition.

Why Choose an Outsunny Greenhouse?

  • Extend Your Growing Season — A greenhouse lets you start seeds earlier in spring and grow later into autumn, significantly increasing what you can grow in the UK's short outdoor season.
  • Protect Plants from Harsh Weather — Outsunny greenhouses shield plants from frost, heavy rain, strong winds, and garden pests, creating a stable, controlled environment for healthy growth.
  • Easy to Assemble & Maintain — All Outsunny greenhouse kits include step-by-step instructions and the necessary fixings. Most models can be assembled by two people without specialist tools.
  • Built for Year-Round Use — Robust aluminium or galvanised steel frames and durable polycarbonate or PE covers are designed to withstand British weather across multiple seasons.

Explore the Range

Mini Greenhouses — Compact and ideal for balconies, patios, or smaller gardens. Perfect for protecting seedlings, herbs, and delicate plants without taking up significant space.

Walk-In Greenhouses — Spacious enough for shelving, pots, and garden tools. Walk-in models offer a comfortable growing environment and easy access to all your plants.

Polycarbonate Greenhouses — Superior insulation and UV protection make polycarbonate models the best choice for year-round growing. Retains heat effectively, protecting plants from frost and cold snaps.

Lean-To Greenhouses — Attach directly to a house or garden wall to make the most of limited space. Ideal for keen gardeners with smaller outdoor areas.

Polytunnel Greenhouses — Generous growing space for larger-scale gardening. Polytunnels are the most cost-effective option for growing vegetables, fruits, and flowers in volume.

Buying Tips

  • Measure your space carefully — Check the greenhouse footprint and height before ordering. Allow clearance around the structure for door opening and ventilation, and ensure the ground is level before assembly.
  • Consider what you'll grow — Tall plants like tomatoes need a walk-in or polycarbonate model with adequate height; seedlings and herbs can thrive in a compact mini greenhouse.
  • Check ventilation options — Good airflow is essential to prevent overheating in summer. Look for models with roof vents, windows, or zip-open panels for temperature control.
  • Think about anchoring — Greenhouses placed on grass or soil should be anchored with ground stakes or a base frame for stability in wind. Check whether an anchoring kit is included or available separately.

Complete the Look

Pair your greenhouse with an Outsunny patio furniture set to create a complete garden space, or explore our Outsunny sheds for additional outdoor storage. For covered outdoor living, browse our Outsunny gazebos and pergolas.

FAQ

What size Outsunny greenhouse do I need?

The right size depends on what you plan to grow and the space available. Mini greenhouses (typically under 1m wide) suit balconies and small patios for seedlings and herbs. Walk-in models from 1.2m to 2m wide are ideal for most home gardeners growing a mix of plants. Larger polycarbonate or polytunnel greenhouses from 2m upwards suit serious growers or those cultivating vegetables and fruit in volume. Always measure your available space and check the product dimensions before purchasing.

What materials are Outsunny greenhouses made from?

Outsunny greenhouses are typically constructed with aluminium or galvanised steel frames for strength and rust resistance, combined with polycarbonate panels or reinforced PE plastic covers for light transmission and weather protection. Polycarbonate models offer superior insulation and UV filtering, making them the best choice for year-round growing. PE cover models are lighter and more affordable, ideal for seasonal use.

Are Outsunny greenhouses suitable for year-round use?

Most Outsunny greenhouse models are designed for year-round outdoor use in the UK. Polycarbonate greenhouses offer the best insulation and frost protection, making them the most suitable for winter growing. PE cover models provide good protection in milder conditions but may need additional insulation or a frost fleece lining during very cold spells. During extreme weather such as heavy snow or strong winds, we recommend securing the frame with additional anchoring.

Do Outsunny greenhouses come with shelves?

Some Outsunny greenhouse models include built-in shelving as standard, while others are supplied without shelves to maximise floor space for larger pots or grow bags. Always check the individual product listing to confirm exactly what's included with your chosen model. Shelving units compatible with most Outsunny greenhouses are also available separately.

Is assembly required for Outsunny greenhouses?

Yes, self-assembly is required for all Outsunny greenhouses. Each model comes with detailed step-by-step instructions and all necessary fixings. We recommend having two people for assembly, particularly for larger walk-in or polycarbonate models. Most greenhouses can be assembled on a flat, level surface in a few hours without specialist tools.

Can an Outsunny greenhouse be placed directly on grass or soil?

Yes — many Outsunny greenhouse models can be placed directly on flat grass or compacted soil. However, for added stability, particularly in windy conditions, we recommend using ground anchoring stakes or a base frame. Some models include an anchoring kit; for others, this may be available separately. Placing the greenhouse on a level surface is essential for proper door alignment and structural integrity.

How do I maintain an Outsunny greenhouse?

To maintain your Outsunny greenhouse, clean the panels or cover periodically with warm water and mild detergent to maximise light transmission. Check the frame fixings at the start of each season and tighten any loose bolts. For PE cover models, inspect the cover for tears or wear and replace if necessary. Ensure vents and doors open and close freely, and clear any debris from the base to prevent moisture build-up.