Palram Canopia Mythos 6x8 Greenhouse review
Households wanting a durable, unheated space to grow their own food and start seedlings year-round.
By Tom Calder
A sturdy, sensibly priced walk-in greenhouse whose twin-wall polycarbonate is far more forgiving than glass around children, pets and stray footballs. A solid, low-drama choice for growing more of your own food, provided you anchor it properly to a firm base.
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- Twin-wall polycarbonate is near-unbreakable and diffuses light well, reducing scorch while blocking UV
- Rust-resistant aluminium frame with a galvanised steel base and integrated guttering
- Good value against a like-for-like aluminium-and-glass greenhouse, and safer to live with
- Assembly is slow and fiddly, with picture-only instructions and a fair few small parts
- Panels can work loose or pop out in strong winds unless well sealed and anchored
Who shouldn't buy this
Your plot is very exposed or you can't fix it to a solid, level base — owners repeatedly report panels dislodging in gales, so a sheltered, firmly anchored spot is essential.
Key specs
| Type | Walk-in hobby greenhouse (aluminium frame, polycarbonate) |
| Size | 6 x 8 ft (approx. 1.85 x 2.5 m) |
| Glazing | 4mm twin-wall polycarbonate |
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Alternatives to consider
as of 20 Sep 2026, 12:29 BST · Details
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