The best lean-to greenhouses, compared.
Top pick: Ohuhu 210 cm lean-to greenhouse – Own 4.1 from 1,080 ratings, 210 cm of height, two zip doors, and a 3-tier rack in the box at about £59.99. Best value: VOUNOT 200 cm lean-to greenhouse – A 200 × 100 × 180 cm polyethylene cover at about £36.99, with a 135 g/m² cover and four stakes named. Updated 21 October 2026.
A lean-to greenhouse sits against a wall, fence, or garage with a single-slope roof, so it takes less depth than a freestanding house. On amazon.co.uk this comparison is two product types. Outsunny is an aluminium and polycarbonate house with a sliding door, one roof vent, a galvanised steel base, and ground bolts. Eight misfits were removed, including freestanding tunnels, a patio cabinet, planter covers, and a raised bed with a cover. None of the four prints a flashing schedule or a cavity-wall fixing list, and none has a printed wind or snow load. The order of wall, footprint, glazing, vent, and base is set out in the [lean-to greenhouse buying guide](/hub/raised-beds-greenhouses-and-compost/lean-to-greenhouse/sub/lean-to-greenhouse-buying-guide). A lean-to is a shape, not a material. UK retailer guidance distinguishes an open back, where the wall is the rear skin, a solid back, and a glazed back. These four amazon.co.uk listings are closed enough to have their own cover or panels. States HDPE at 135 g/m² on a sprayed steel frame. The 200 cm listing prints an 8 mm nominal wall thickness, while the 300 cm listing prints 16 mm, so the two size lines do not agree.
A lean-to greenhouse sits against a wall, fence, or garage with a single-slope roof, so it takes less depth than a freestanding house. On amazon.co.uk this comparison is two product types.
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Personal buying guide
Question 1 of 2
Which cover do you want against the wall?
The Ohuhu lean-to is the 200 × 100 × 210 cm PE house at about £59.99, with two roll-up zip doors, two mesh windows, and a 3-tier rack of 90 × 30 × 65 cm rated at 10 kg per tier. On amazon.co.uk it sits at 4.1 from 1,080 ratings, its own file rather than a shared line. Reviewers often put it up with two people and use the rack for a beginner vegetable season, and more than one says it held in quite heavy wind once the stakes, ropes, and wall fixings were on. The cover weight in grams per square metre is not printed. The outer weight pocket is a repeated complaint: it collects rain and reviewers say it has no drainage holes. Zips fail too easily in the file, metal bars were described as soft and bent on a calm day in one review, and one cover started to break up after a season with no replacement cover found. The supplied rack is thigh height and the grids can lift, so it is a light rack, not a bench for heavy compost bags.
Pros
Cons
Best for: A wall-side season of pots and seedlings when you want shelves in the box and standing height at 210 cm.
Less suitable: A multi-year cover, a drained ballast flap, or a heavy rack load above 10 kg a tier.
Specifications
Common questions
Is the shelving included?
Yes. The listing includes a 3-tier rack of 90 × 30 × 65 cm, stated at up to 10 kg per tier.
Does the file give a cover weight in g/m²?
No. The cover material is polyethylene. A grams-per-square-metre figure is not printed.
What do reviewers say about the weight pocket?
More than one review says the outer flap collects rain. One review says it has no drainage holes.
Across the shared amazon.co.uk line of 4.1 from 357 ratings, this VOUNOT lean-to is a 200 × 100 × 180 cm walk-in with a 135 g/m² PE cover and a sprayed steel frame listed at 16 mm tubes. At about £36.99 and 5 kg it goes up as a short-season shelter against a house, barn, garage, or fence, and reviewers often say the frame and cover fit together without a long build. One review describes plants kept frost-free through a winter of wind, storms, and snow, with some flowering in the first week of March. The same file records green plastic connectors that arrived already stress-marked, and a front zip that detached after use, including one that failed after a week. The cover is not waterproof enough for stored tools, so rain can get onto anything left on the floor. Height is 180 cm, so a taller person will stoop, and the bullets do not include shelves. The 4.1 and 357 ratings are the same line as the 300 cm listing, so they are not a separate verdict on this length.
Pros
Cons
Best for: A short wall or fence where you want a cheap PE cover for overwintering pots, and you can accept a shared 357-review line.
Less suitable: Tool storage, a wet site, or anyone who needs a proven 200 cm-only review set and standing headroom.
Specifications
Common questions
Does this VOUNOT listing include shelves?
No. The bullets list the cover, frame, four fasteners, and four stakes. A shelf is not in the file.
Are the 357 reviews only about the 200 cm size?
No. The 300 cm listing shows the same 4.1 from 357 line and the same review text in this capture. Read the file once.
What does the door-style line say?
The field says swing adorno. The bullets describe a zippered door and a Velcro mesh. Use the bullets.
This VOUNOT listing stretches the same lean-to idea to 300 × 100 × 180 cm at about £45.99 and 6.67 kg, still with a 135 g/m² PE cover and a single zip door. The depth stays at 100 cm and the height at 180 cm, so the extra metre is length along the wall rather than more headroom or a deeper bed. Bullets name four nylon fasteners and four stakes, and they still do not include a shelf. The amazon.co.uk file shows 4.1 from 357 ratings, but those review blocks match the 200 cm listing and none of them names the 300 cm length. Praise in that shared pool is for an easy build, a cover that fits, and frost protection for overwintering plants. The same pool also records flimsy green connectors, a cover that is not fully waterproof, and a zip that leaves the fabric. The special-features field says a hinged door while the bullets describe a zip, so check the parcel against the zip you actually need.
Pros
Cons
Best for: A long fence or house wall where you want three metres of PE cover and you already accept the shared VOUNOT review text.
Less suitable: Anyone who needs reviews of this length, shelves, or a rigid door rather than a zip.
Specifications
Common questions
How is the 300 cm VOUNOT different from the 200 cm listing?
The size line is 300 × 100 × 180 cm, the weight is 6.67 kg, and the price is about £45.99. Depth and height match the 200 cm listing. Shelves are still not listed.
Do the written reviews mention 300 cm?
No sentence in this raw file names the 300 cm length. The review blocks match the 200 cm listing.
Is a hinge stated, or a zip?
The special-features field says a hinged door. The bullets describe a zippered door. Both lines are in the file.
The Outsunny is the only rigid house in this set: a polycarbonate lean-to listed as 6 × 4 ft and measured at 192 × 127 × 214 cm, priced at about £157.69. The aluminium frame, galvanised steel base, sliding door of 62 × 158 cm, one roof vent, and rain gutters are in the bullets, and the nominal panel thickness is 0.4 cm. Across 3.6 from 52 amazon.co.uk ratings, buyers who finish the build often call it spacious and say the panels feel sturdier once they are in. Assembly is required, instructions are image-only or omit orientation, and several reviews describe most of a day with two people. The sliding-door rail is called flimsy, and one reviewer drilled extra holes. Panels arrived with the protective film missing or on both sides, so the UV face was unclear, and some buyers siliconed the sheets in. One first-day wind note cites about 45 mph behind a wall about 7 feet high. The item-type field says dog bedding; the title, materials, and reviews describe a greenhouse, so treat that field as a catalogue error.
Pros
Cons
Best for: A wall out of the prevailing wind where you want a polycarbonate shell, a roof vent, and gutters, and you have a day for two people to build it.
Less suitable: A quick one-person cover, a wide doorway, or anyone who wants a high review count before spending about £157.69.
Specifications
Common questions
Is the frame aluminium?
Yes. The frame material field says aluminium, and the bullets say an aluminium alloy frame with a galvanised steel base.
How wide is the door?
The bullets say 62 cm wide by 158 cm high. The overall size line is 192 × 127 × 214 cm, not the 6 × 4 ft label alone.
What is the dog-bedding line in the details?
The item-type and included-components fields say beds and bedding for dogs. The title, materials, and reviews describe a greenhouse. Treat those two fields as a catalogue error.
Shelf prices, sizes, and star lines are the four amazon.co.uk listings captured on 19 October 2026. This is not a lab test. A wind note in a review is one garden, not a rated speed. Public UK sources cover planning class, party wall, ventilation, and satisfactory quality. Weights sum to 100.
Cover and frame
30%Polyethylene against polycarbonate, the stated cover weight or panel thickness, and whether the frame line agrees with the bullets.
Size, door and vent
25%Footprint, headroom, door type, mesh or a roof vent, and whether a shelf is actually in the box.
Anchors and wall fixing
15%Stakes, ropes, ground bolts, or a steel base named on the listing. No printed wind load is treated as unstated.
Review evidence
20%An own amazon.co.uk star line outranks a pool shared with another size. The written faults stay in the cons.
Shelf price
10%GBP shelf price on that listing. A cheaper polyethylene cover is not scored as a discounted copy of the panel house.
Choose the cover first, then the height, then how the frame is held to the wall and the ground. A polyethylene kit and a polycarbonate house are different objects at different prices.
A lean-to is a shape, not a material. UK retailer guidance distinguishes an open back, where the wall is the rear skin, a solid back, and a glazed back. These four amazon.co.uk listings are closed enough to have their own cover or panels. VOUNOT states HDPE at 135 g/m² on a sprayed steel frame. The bullets say 16 mm tubes. The 200 cm listing prints an 8 mm nominal wall thickness, while the 300 cm listing prints 16 mm, so the two size lines do not agree.
The 200 cm and 300 cm listings share one 4.1 from 357 line and the same review text in this capture. Compare them on length, weight, and price. Do not add the 357 twice.
Stakes and ropes are listed parts. Reviewers still report bent tubes, torn zips, and lost panels. No wind speed is printed on these four listings.
GOV.UK states that buildings attached to the house are not Class E. In England they fall under Class A. Scotland, Wales, and Northern Ireland use different orders.
Cover is the split that changes the price. VOUNOT states high-density polyethylene at 135 g/m² on alloy-steel tubes. The bullets say 16 mm tubes, but the 200 cm nominal wall-thickness field prints 8 mm while the 300 cm field prints 16 mm. Ohuhu states polyethylene and a painted metal frame, and it does not print grams per square metre. Outsunny states polycarbonate panels at a nominal 0.4 cm on an aluminium frame, with a galvanised steel base in the bullets.
Length along the wall is not the same as headroom. Both VOUNOT sizes are 100 cm deep and 180 cm high. The 300 cm listing adds a metre of length, at about £45.99 and 6.67 kg, and still lists one zip door and no shelf. The Ohuhu keeps a 200 × 100 cm footprint and raises the height to 210 cm, with two zip doors, two mesh windows, and a rack rated at 10 kg per tier. The Outsunny is 192 × 127 × 214 cm, with a sliding door 62 cm wide, one roof vent, and gutters.
Three typical situations, each with a recommendation from this comparison.
You want a season of pots against a wall, with shelves in the box and 210 cm of height. The Ohuhu includes a 3-tier rack stated at 10 kg per tier. Leave it if you need a cover that has already lasted more than one season in the reviews.
You want a polyethylene cover for overwintering pots and you can accept a shared 357-review line. The VOUNOT 200 cm is about £36.99, 180 cm high, with no shelf in the listing. It is a poor fit for tool storage or standing headroom.
You want polycarbonate, a roof vent, and gutters, and you have a day for two people to build it. The Outsunny is about £157.69 with 3.6 from 52 ratings. Skip it if you want a one-person cover or a wide door.
The top pick is the Ohuhu 210 cm lean-to greenhouse at about £59.99. It is the polyethylene house in this set with its own 4.1 from 1,080 amazon.co.uk ratings, two zip doors, and a 3-tier rack stated at 10 kg per tier. Best value is the VOUNOT 200 cm lean-to greenhouse at about £36.99, on a shared 4.1 from 357 line. Skip the Ohuhu if you need a drained ballast flap or a heavy rack. Skip the VOUNOT if you need shelves or reviews that name this length alone.
Ohuhu 210 cm lean-to greenhouse
Own 4.1 from 1,080 ratings, 210 cm of height, two zip doors, and a 3-tier rack in the box at about £59.99.
VOUNOT 200 cm lean-to greenhouse
A 200 × 100 × 180 cm polyethylene cover at about £36.99, with a 135 g/m² cover and four stakes named.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources named below. amazon.co.uk prices, stars and review counts on these listings were read on 19 October 2026. Page updated 21 October 2026.
This page contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are taken from those listings. We did not run a lab test.
