Best Greenhouses & Cold Frames UK (2026) — Page 4
Glass, polycarbonate and mini greenhouses for growing in the UK climate.
Read our full Best Greenhouse UK (2026) guide.
#19 Pick
Palram Canopia EcoGrow 6x8 Greenhouse, GreenRated 4.1 out of 5 stars (176)
- Plastic
- Small gardens
- 1 Year
Currently unavailable
Pros
- Affordable entry point into full-size greenhouses
- Resin frame resists rust and rot
- Reinforced polyethylene cover lets in plenty of light
Cons
- Cover less durable long-term than polycarbonate or glass
#20 Pick
Palram 6'x4' (1.8 x 1.2m) Harmony Green Greenhouse, Clear PolycarbonateRated 4.4 out of 5 stars (780)
- Polycarbonate
- Small gardens
- 5 Years
Currently unavailable
Pros
- Rust-resistant aluminium frame
- Polycarbonate blocks 99% of harmful UV rays
- Opening roof vent for ventilation control
Cons
- Base anchoring recommended in exposed spots
#21 Pick
Palram Canopia Harmony 6x10 Silver Greenhouse, Clear Polycarbonate, Base IncludedRated 4.5 out of 5 stars (340)
- Polycarbonate
- Large gardens
- 5 Years
£508.99
Pros
- Larger 6x10 footprint suits keen growers
- Galvanised steel base included
- High eaves give extra headroom
Cons
- Needs two people to assemble
#22 Pick
Palram Canopia Harmony Grey Aluminium Greenhouse, 6 x 8ftRated 4.5 out of 5 stars (310)
- Polycarbonate
- Growing & Propagation
- 5 years
Currently unavailable
Pros
- Polycarbonate walls protect plants from UV while diffusing light
- Rust-resistant aluminium frame on galvanized steel base
- 5-year manufacturer warranty
Cons
- Assembly is a two-person job and takes several hours
#23 Pick
Gardman 4 Tier Mini Greenhouse Shelving UnitRated 4.3 out of 5 stars (2,140)
- Plastic
- Seed Starting
- 1 year
Currently unavailable
Pros
- Four deep shelves for pots and seed trays
- No-tool push-fit steel frame assembly
- Roll-up zippered door for easy access
Cons
- PE cover is less durable than polycarbonate panels
#24 Pick
Palram Canopia Hybrid Greenhouse 6x4, GreenRated 4.5 out of 5 stars (1,243)
- Polycarbonate
- Growing & Propagation
- 5 Years
Currently unavailable
Pros
- Rust-resistant aluminium frame for long life
- Crystal-clear polycarbonate side walls diffuse sunlight
- 5-year manufacturer warranty
Cons
- Base anchoring recommended in exposed, windy gardens