Best Greenhouses & Cold Frames — Plastic + 1 Year (2026)
3 greenhouses & cold frames matching material “Plastic” + warranty “1 Year”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Greenhouse UK (2026) guide.
£39.99
Pros
- Reinforced weatherproof PVC cover
- Roll-up zip door for easy access
- Tool-free assembly, ideal for patios
Cons
- Less sturdy than a full-size greenhouse
- Cover needs replacing after a few seasons
#2 Pick
Outsunny Polytunnel Greenhouse with Windows and Door, 3 x 2mRated 4.3 out of 5 stars (287)
- Plastic
- Large gardens
- 1 Year
£149.99
Pros
- Galvanised steel frame for durability
- Roll-up door and mesh windows for ventilation
- Walk-in height suits full-size crops
Cons
- PE cover less durable than polycarbonate or glass long-term
#3 Pick
Oypla Growbag Tomato Growhouse Garden Greenhouse with PVC Cover, 150x100x50cmRated 4.1 out of 5 stars (512)
- Plastic
- Balcony/patio
- 1 Year
£34.99
Pros
- Sized to fit standard growbags
- Sturdy tubular steel frame with PVC cover
- Roll-up zipped door for ventilation
Cons
- Best suited to patios rather than full-size crops