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Roundups / Wooden greenhouses

Grow-your-own · UK product comparison

Best wooden greenhouses compared in 2026

Wooden greenhouses bring a classic look to a garden, but they differ a lot in size, glazing and upkeep. This roundup covers five timber models, from two small mini-style greenhouses for patios and narrow spots to walk-in Mercia greenhouses in 4x6, 6x6 and 8x6 sizes. The minis use polycarbonate or Perspex glazing, while the larger models have dip-treated shiplap timber and styrene glazing. Prices run from £229 to £779.99. All five are self-assembly, and the Mercia greenhouses come without a floor. This guide compares the listed specs so you can match size, weight and care to your plot.

P&P

Plot & Pot editors
We compare published product details, sizes and materials. These are desk-researched product roundups, not hands-on tests.

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Our stand-out pick

Rowlinson Hardwood Mini Greenhouse

The Rowlinson Hardwood Mini is the most straightforward wooden option for gardeners with limited space. At £229 its 120 × 63 × 144 cm size suits a patio or sunny wall. It has a hardwood frame, twin-wall polycarbonate panels, two shelves and two lifting lids with adjustable stays, all at 30 kg.

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At a glance

Our picks compared

Prices are dated snapshots and can change. Product dimensions are shown as width × depth × height.

ProductBrandPrice snapshotRetailerDimensionsWeightFrameGlazingShelvesLidsAssemblyWarrantyLidFloorDoorVentilation
Rowlinson Hardwood Mini GreenhouseRowlinson£229.00One Garden120 × 63 × 144 cm30 kgFSC hardwoodTwin-wall polycarbonate22 lifting lids with adjustable staysSelf-assembly, 1 to 2 hours12-month parts————
Zest Compact Botanical GreenhouseZest£329.00One Garden85 × 40 × 123 cm40 kgPressure-treated softwoodPerspex2 large removable shelves—Self-assembly10-year anti-rotOpening lid with stayNot supplied——
Mercia Traditional Greenhouse 4x6Mercia£479.99One Garden192.8 × 124.1 × 206 cm94 kgDip-treated shiplap timberStyrene——Self-assemblyConditional 10-year anti-rot, annual retreatment required—Not suppliedHinged single door1 window
Mercia Traditional Greenhouse 6x6Mercia£779.99One Garden192.8 × 182.4 × 206 cm111 kgDip-treated shiplap timberStyrene——Self-assembly, 2 people, 4 to 6 hoursConditional 10-year anti-rot, annual retreatment required—Not suppliedHinged single door1 opening roof vent
Mercia Traditional Greenhouse 8x6Mercia£679.99One Garden192.8 × 240.7 × 206 cm128 kgDip-treated shiplap timberStyrene——Self-assembly, 2 people, 4 to 6 hoursConditional 10-year anti-rot, annual retreatment required—Not suppliedHinged single door1 opening roof vent

The details

Five wooden greenhouses, compared

Product photo of Rowlinson Hardwood Mini Greenhouse

01 · Best overall

Rowlinson Hardwood Mini Greenhouse

A small hardwood greenhouse with shelves and two adjustable lids for patios and tight spaces.

The Rowlinson Hardwood Mini is the lowest-priced wooden greenhouse here at £229, measuring 120 × 63 × 144 cm and weighing 30 kg. It pairs a hardwood frame with twin-wall polycarbonate panels. Two shelves provide space for pots and seed trays, and two lifting lids with adjustable stays let you choose how far to open it. It is self-assembly, so it suits a patio, balcony or short stretch of wall where a walk-in model would take up too much ground. The warranty is a 12-month parts warranty.

Price snapshot: £229.00 at One Garden, recorded 2026-11-02. Check the retailer page for the current price.

Key specifications

Dimensions
120 × 63 × 144 cm
Weight
30 kg
Frame
FSC hardwood
Glazing
Twin-wall polycarbonate
Shelves
2
Lids
2 lifting lids with adjustable stays
Assembly
Self-assembly, 1 to 2 hours
Warranty
12-month parts

What stands out

  • Lowest price in the roundup at £229, with a 30 kg weight
  • Two shelves and two lifting lids with adjustable stays

Things to consider

  • The 12-month parts warranty is much shorter than the 10-year anti-rot cover on the larger timber models
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Product photo of Zest Compact Botanical Greenhouse

02 · Best for narrow spots

Zest Compact Botanical Greenhouse

An ultra-slim softwood greenhouse with removable shelves and a 10-year anti-rot warranty.

The Zest Compact Botanical is the slimmest greenhouse here at 85 × 40 × 123 cm, so it can slot against a wall or along a narrow patio edge. It has a pressure-treated softwood frame with Perspex glazing, and two large removable shelves for different pots and trays. There is an opening lid with a stay, but no floor is supplied. At 40 kg it is heavier than the Rowlinson despite its smaller size, so think about where it will sit before assembly. Its listed warranty is 10-year anti-rot.

Price snapshot: £329.00 at One Garden, recorded 2026-11-02. Check the retailer page for the current price.

Key specifications

Dimensions
85 × 40 × 123 cm
Weight
40 kg
Frame
Pressure-treated softwood
Glazing
Perspex
Shelves
2 large removable shelves
Lid
Opening lid with stay
Floor
Not supplied
Assembly
Self-assembly
Warranty
10-year anti-rot

What stands out

  • Very slim footprint for a narrow space
  • Two large removable shelves and a pressure-treated softwood frame

Things to consider

  • At £329 it costs £100 more than the larger Rowlinson, and no floor is supplied
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Product photo of Mercia Traditional Greenhouse 4x6

03 · Best entry-level walk-in

Mercia Traditional Greenhouse 4x6

The smallest full-height wooden model here, with a traditional shiplap look.

The Mercia Traditional 4x6 measures 192.8 × 124.1 × 206 cm. It uses dip-treated shiplap timber with styrene glazing, and has one window and a hinged single door. No floor is supplied. At 94 kg it is a hefty piece of kit compared with the minis, so plan its positioning and assembly carefully. The conditional 10-year anti-rot warranty requires annual retreatment, so factor in regular upkeep. It suits gardeners with a modest plot who want standing room and a traditional timber frame.

Price snapshot: £479.99 at One Garden, recorded 2026-11-02. Check the retailer page for the current price.

Key specifications

Dimensions
192.8 × 124.1 × 206 cm
Weight
94 kg
Frame
Dip-treated shiplap timber
Glazing
Styrene
Door
Hinged single door
Ventilation
1 window
Floor
Not supplied
Assembly
Self-assembly
Warranty
Conditional 10-year anti-rot, annual retreatment required

What stands out

  • Full 206 cm height in a modest walk-in footprint
  • Dip-treated shiplap timber frame

Things to consider

  • The 10-year anti-rot warranty depends on annual retreatment
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Product photo of Mercia Traditional Greenhouse 6x6

04 · Best for a square layout

Mercia Traditional Greenhouse 6x6

A roomier, squarer Mercia with a roof vent, though it costs more than the longer 8x6 model.

The Mercia Traditional 6x6 measures 192.8 × 182.4 × 206 cm, giving a squarer floor plan than the 4x6 and more room for benches or growing beds. It shares the dip-treated shiplap timber and styrene glazing of the other Mercia models, with a hinged single door and one opening roof vent. No floor is supplied. At 111 kg it is a substantial build, so plan the site before assembly. The 10-year anti-rot warranty is conditional on annual retreatment. At the listed £779.99 price, it suits buyers who specifically want this layout.

Price snapshot: £779.99 at One Garden, recorded 2026-11-02. Check the retailer page for the current price.

Key specifications

Dimensions
192.8 × 182.4 × 206 cm
Weight
111 kg
Frame
Dip-treated shiplap timber
Glazing
Styrene
Door
Hinged single door
Ventilation
1 opening roof vent
Floor
Not supplied
Assembly
Self-assembly, 2 people, 4 to 6 hours
Warranty
Conditional 10-year anti-rot, annual retreatment required

What stands out

  • Squarer footprint with 206 cm height
  • Includes an opening roof vent

Things to consider

  • Costs more than the larger 8x6 model, and its warranty requires annual retreatment
View One Garden
Product photo of Mercia Traditional Greenhouse 8x6

05 · Best for maximum space

Mercia Traditional Greenhouse 8x6

The longest greenhouse here, with room for several growing rows or benches.

The Mercia Traditional 8x6 measures 192.8 × 240.7 × 206 cm, making it the one for gardeners with a large plot who want room for several beds or benches. It uses dip-treated shiplap timber and styrene glazing, with a hinged single door and one opening roof vent. No floor is supplied. At 128 kg it is the heaviest option, so site preparation and help with assembly matter. The listed price is £679.99. Its conditional 10-year anti-rot warranty requires annual retreatment.

Price snapshot: £679.99 at One Garden, recorded 2026-11-02. Check the retailer page for the current price.

Key specifications

Dimensions
192.8 × 240.7 × 206 cm
Weight
128 kg
Frame
Dip-treated shiplap timber
Glazing
Styrene
Door
Hinged single door
Ventilation
1 opening roof vent
Floor
Not supplied
Assembly
Self-assembly, 2 people, 4 to 6 hours
Warranty
Conditional 10-year anti-rot, annual retreatment required

What stands out

  • 240.7 cm length gives the most floor space in this group
  • Includes an opening roof vent

Things to consider

  • At 128 kg it is the heaviest model, and the anti-rot warranty requires annual retreatment
View One Garden