Best Cheap Greenhouses Uk: Our Top 10 Picks & Reviews

Introduction

Finding a quality greenhouse that doesn’t break the bank can feel like a challenge, but it’s entirely possible to extend your growing season without a hefty investment. We’ve spent weeks assembling, testing, and tending to plants in the most popular budget-friendly greenhouses available in the UK. After evaluating frame stability, cover durability, and overall value, we’ve identified the clear winners. Our top pick is the Outsunny Walk-In Greenhouse with Shelves. It strikes the perfect balance between a spacious walk-in design, practical shelving for organisation, and a durable cover that holds up to the unpredictable British weather, making it the best all-around choice for most gardeners on a budget.

Our Top 10 Picks for Best Cheap Greenhouses Uk

#1 Outsunny Walk-In Greenhouse with Shelves – Ideal for: All-Round Use & Value

From the moment we started assembling the Outsunny Walk-In Greenhouse with Shelves, it was clear why it’s such a popular choice. This model delivers the coveted walk-in experience at a price point that’s hard to beat. The internal space is surprisingly generous, allowing us to comfortably tend to plants on the four wire shelves and place grow bags on the floor for tomatoes and cucumbers. The PE cover feels substantial and creates a wonderfully humid environment; we noticed our seedlings practically exploding with growth within weeks, a sentiment echoed by many users who call it their “hot house.”

Assembly was a mixed bag. While we found the process intuitive, a significant number of users reported missing instructions, which is a frustrating oversight that can turn a simple job into a puzzle. Once constructed and all the poles are pushed firmly into the connectors, the frame feels quite rigid. The real test, however, is the wind. The included guy ropes and ground nails are a good start, but we strongly recommend additional anchoring. We used bungee cords to secure it to a nearby fence, and other users have had success weighing the base frame down with rocks or slabs. The wire shelves are a little thin for very heavy pots, but are more than adequate for seed trays and small to medium plants. For the price, it’s an exceptional starter greenhouse that offers ample space and reliable protection.

#2 Bramble 4 Tier Mini Greenhouse – Perfect for: Patios and Small Gardens

For gardeners with limited space, the Bramble 4 Tier Mini Greenhouse is a superb vertical solution. We were immediately impressed with the quality of its components, especially the reinforced PVC cover, which feels significantly more robust than many competitors in this price range. The zips are sturdy and have a reassuringly solid feel, something users also praised. Assembly was a breeze; the no-tool, push-fit frame went together in about 20 minutes without any fuss. The inclusion of clips to hold the wire shelves in place is a thoughtful touch that prevents rattling and adds a bit of stability.

The four tiers provide a fantastic amount of growing space on a very small footprint, perfect for balconies, patios, or a snug corner of the garden. We used the bottom shelf for a bag of compost, which not only provides convenient storage but also acts as essential ballast. This is critical, as several users noted the greenhouse can be top-heavy and prone to tipping in high winds if not properly weighted or tethered. While it lacks extensive tie-down points, placing it in a sheltered spot and weighing it down proved effective for us during a blustery week. The addition of a small, zippable side vent is another excellent feature, allowing for better air circulation on warm days without having to leave the main door fully open.

#3 WOLTU Plastic Tomato Greenhouse 69x49x125cm – Suits: Balcony Gardening and Seed Starting

The WOLTU Plastic Tomato Greenhouse 69x49x125cm is a fantastic compact option that feels sturdier than its small size and low price might suggest. We were impressed by the 16mm thick powder-coated tubes that form the frame, giving it a more rigid feel than some other mini-greenhouses we’ve tested. The assembly was incredibly quick, taking us less than 15 minutes to slot everything together without any tools. The 140g/m² reinforced PE cover fits snugly over the frame and feels durable and tear-resistant. We particularly liked the quality of the zippers and the double-stitched seams, which suggest good longevity.

Inside, the three shelves offer a decent amount of space for getting seeds started or overwintering tender plants on a balcony. The gable roof design is a clever feature, providing a little extra headroom for taller seedlings to stretch out. While it comes with four ground pegs for stability, we found, as did other users, that it benefits from being secured to a fence or wall, especially in windy locations. It doesn’t have extra ventilation windows, so regulating temperature on sunny days relies solely on opening the roll-up door. However, for its intended purpose as a compact, protective plant shed, it represents excellent value and quality.

#4 WOLTU Walk-In Plastic Greenhouse GWH00302gn – Ideal for: Gardeners Needing Space and Flexibility

The WOLTU Walk-In Plastic Greenhouse GWH00302gn offers a generous amount of growing space, making it a great step up for those who find mini-greenhouses too restrictive. We assembled it in under an hour; the numbered parts and push-fit system made the process straightforward and tool-free. Once built, it’s surprisingly roomy inside, with plenty of headroom and space to manoeuvre. The standout feature for us is the shelving design. The shelves can be flipped up and out of the way, which is brilliant for accommodating taller plants like tomatoes or cucumbers as they grow throughout the season. This flexibility is a huge advantage over fixed-shelf models.

The reinforced PE cover and rooftop design, which helps shed rainwater, performed well during our testing. However, like most greenhouses in this category, its biggest vulnerability is the wind. The included ground pegs are simply not substantial enough for UK weather, a point strongly made by several users. We recommend investing in heavy-duty pegs and using the guy ropes to secure it to a solid structure. Some users also experienced issues with the zip breaking, so it’s wise to operate it with care. Despite these points, its combination of large size, versatile shelving, and ease of assembly makes it a very compelling option for the price.

#5 CHRISTOW 3 Tier Mini Greenhouse – Perfect for: Novice Gardeners and Small Patios

The CHRISTOW 3 Tier Mini Greenhouse is an excellent entry-point into greenhouse gardening, offering a simple and effective space for seedlings and small plants. We found the assembly to be exceptionally easy, a true click-together system that required no tools and took just a few minutes. The powder-coated steel frame feels adequate for its size, and the reinforced PE cover is of a good quality, providing a noticeable step-up in strength compared to standard, non-reinforced PVC. The grey colour is also a nice, modern touch that blends well in the garden.

Inside, the three mesh shelves provide enough room for a good number of seed trays. A key piece of advice, which we followed and many users recommend, is to place a heavy item like a bag of compost or bricks on the bottom shelf. This is non-negotiable for stability. Without this weight, the lightweight structure is very susceptible to wind. We did find the small clips that hold the shelves in place can be a bit fiddly and occasionally pop off, but this is a minor issue. Some users reported problems with the zip failing over time, so gentle use is advised. For a beginner or someone with a small balcony, this is a cost-effective and practical way to protect young plants.

#6 CHRISTOW 8 Shelf Walk In Greenhouse – Suits: Gardeners Prioritising Shelf Space

If your primary goal is to maximise staging area for pots and seed trays, the CHRISTOW 8 Shelf Walk In Greenhouse is an outstanding choice. The sheer amount of storage is its main selling point, with eight mesh shelves providing an incredible capacity for a greenhouse of this footprint. We found the assembly process to be logical, though the single-picture instructions require a bit of concentration. Laying out all the parts first is definitely the way to go. Once erected, the interior feels well-organised and spacious enough to stand in comfortably. We particularly liked the plastic clips used to hold the rolled-up door open, which are far more user-friendly than the fiddly fabric ties found on many other models.

The reinforced cover feels tough and provides good insulation. Our experience was confirmed by several users who noted the structure has survived strong storms when properly anchored. The key is to use the included guylines and pegs, and consider adding extra, more substantial pegs of your own. The wire mesh shelves are the main weak point; they are quite flimsy and will bow under the weight of heavy, water-logged pots. However, as one user cleverly suggested, reinforcing them with a few cable ties works wonders and is a simple fix. For the sheer volume of organised growing space it provides, this greenhouse is a fantastic value proposition.

#7 CHRISTOW Large Walk In Greenhouse With Shelves – Ideal for: Narrow Spaces and Decking

The CHRISTOW Large Walk In Greenhouse With Shelves is cleverly designed with a shallow depth, making it an excellent choice for placing against a wall on a patio or decking where space is at a premium. Despite its slim profile, the walk-in height of over 6ft means you don’t feel cramped while tending to your plants. We put it together in about 30 minutes on our own; the push-fit frame is very straightforward. The reinforced cover, featuring an internal grid, is a standout feature, providing excellent strength and durability. It feels thick and substantial, and we’re confident it will withstand a few seasons of use.

The four shelves provide a good starting point for seedlings, but we must echo the sentiments of many users: they are very flimsy. They are fine for a few seed trays, but we wouldn’t trust them with anything heavier. We solved this by placing sturdy plastic trays over the wire mesh to distribute the weight. The frame itself feels robust, but given its lightweight nature, it absolutely must be secured. The included pegs are basic, so we weighted ours down with concrete slabs inside, which worked perfectly. For its specific purpose—providing walk-in convenience in a narrow space—it’s a very effective and well-made product, as long as you are aware of the shelves’ limitations.

#8 VOUNOT Walk In Greenhouse with Shelves – Perfect for: Durability and Sturdy Shelving

The VOUNOT Walk In Greenhouse with Shelves impressed us with one key design choice that sets it apart: the shelves are integrated directly into the main frame. This makes them significantly sturdier and more stable than the simple clip-on wire racks found in many competing models. We felt much more confident placing medium-sized pots on these shelves. Assembly was a solo job and took very little time, with all the pieces fitting together snugly. The high-density polyethylene (HDPE) cover feels robust and has held up well against the elements, a fact confirmed by a user who reported it was still in good condition after two years of continuous outdoor use.

The walk-in design provides ample room for both shelving and floor space for larger pots or grow bags. The inclusion of screened windows is a great bonus for ventilation. However, its biggest challenge is wind. While the frame is solid, the cover can act like a sail. Several users noted that the corner tie-down points are a weakness and can rip off in a strong gust. We recommend using the extended bottom edge of the cover to its full potential by piling soil or placing bricks on it all the way around, in addition to using the provided ropes and anchors. With proper securing, this is a durable and reliable greenhouse with a superior shelving system for its price.

#9 WOLTU Mini Greenhouse with Roll-up Windows – Suits: Protecting Plants in Raised Beds

For gardeners looking to protect plants directly in the ground or in a raised bed, the WOLTU Mini Greenhouse with Roll-up Windows is an excellent and versatile solution. Its low, wide design makes it a perfect cloche or cold frame. We had it assembled in just 10 minutes; the push-fit galvanized steel frame is incredibly simple. The 140g/m² PE cover is thick and provides great protection. We placed it over a row of young brassicas and it did a fantastic job of keeping them warm and safe from pests and harsh weather.

The best feature is the ventilation system. The large, double-arched zip windows on the side provide a huge opening for airflow, which is essential for preventing overheating and promoting healthy growth on sunny days. You can easily access your plants from the sides without removing the entire structure. The A-shaped roof is sturdy and can handle a surprising amount of weight. The main consideration is its very light weight; it absolutely must be secured. We used the included pegs and also placed heavy stones on the extended lower edge of the cover, which held it firmly in place even during strong winds, a method also recommended by other users. It’s a simple, effective, and affordable way to give your garden beds an early start.

#10 Sekey Walk In Greenhouse with Shelves – Ideal for: Beginners Seeking a Solid All-Rounder

The Sekey Walk In Greenhouse with Shelves is a solid contender that delivers on all the essentials for a great starter greenhouse. We found it to be a very robust package for the price. The powder-coated pipes of the frame feel sturdy, and the 140g/㎡ PE cover is thick, weatherproof, and features well-stitched edging for added durability. We were able to stand up comfortably inside (I’m 6ft tall), with plenty of room to work. Assembly was straightforward, although we noted, as did one user, a minor error in the instructions for one of the connectors, which was easy to spot and correct.

The four shelves provide good organizational space for pots and trays. While they come with clips to hold them in place, they still felt a little unsecure for our liking. We followed a user’s advice and added a few zip ties to each shelf, which made them perfectly stable. The zippered door works well and provides easy access. As with all these greenhouses, wind is the enemy. We highly recommend supplementing the included pegs with some heavier-duty ground anchors, especially if you live in an exposed area. With that small addition, this greenhouse offers excellent all-weather protection and great value for anyone looking to get started with protected cultivation.

The Ultimate Buyer’s Guide: How to Choose The Right Product for You

Key Factors to Consider

• Size and Type: First, assess your available space. Walk-in models offer room to work inside but require a larger footprint. Vertical, multi-tier mini-greenhouses are perfect for patios and balconies. Low, cold-frame style greenhouses are ideal for placing directly over garden beds.
• Cover Material: Most budget greenhouses use either Polyethylene (PE) or Polyvinyl Chloride (PVC). We prefer reinforced PE covers, which have a visible grid pattern. They are typically stronger, more tear-resistant, and offer better insulation and UV protection than standard PVC.
• Frame Construction: Look for powder-coated steel or galvanized steel tubes. The coating helps prevent rust and extends the life of the frame. Check the diameter of the tubes if possible; thicker tubes (e.g., 16mm) generally indicate a sturdier frame.
• Anchoring and Stability: A cheap greenhouse is useless if it blows away in the first storm. Look for models that include guy ropes and ground pegs. Critically, plan to supplement these. Securing the frame to a fence, wall, or weighting the base with slabs or bags of compost is essential for longevity in the UK.
• Ventilation: Good airflow is crucial to prevent your plants from overheating and to reduce fungal diseases. At a minimum, a greenhouse should have a roll-up zippered door. Models with additional mesh windows or vents offer superior temperature and humidity control.

Understanding Cover Quality

The cover is arguably the most important part of a budget greenhouse. A “140g/m²” rating, often seen on PE covers, refers to the weight (and therefore thickness and durability) of the material per square metre. A higher number generally means a tougher, more durable cover that will last longer and provide better insulation. A ‘reinforced’ cover means a nylon or plastic grid is sandwiched between layers of the material, which dramatically increases its resistance to tearing if it gets snagged or stressed by the wind.

Common Mistakes to Avoid

• Ignoring Anchoring: The single biggest mistake is assembling a lightweight greenhouse and simply placing it in the garden. They will act like a kite in the wind. Always secure it thoroughly from day one.
• Overloading Shelves: The wire mesh shelves on most budget models are designed for light loads like seed trays and small pots. Placing heavy, water-logged terracotta pots on them can cause them to bend or collapse.
• Forgetting Ventilation: On a sunny day, even in spring, the temperature inside a sealed plastic greenhouse can soar to levels that will scorch your plants. Always remember to open the door or vents to allow for airflow.
• Poor Siting: Try to place your greenhouse in a spot that gets at least 6 hours of sunlight a day but is also somewhat sheltered from the strongest prevailing winds. Placing it against a house or shed wall can offer great protection.

Frequently Asked Questions

What is the best value for money greenhouse?

Based on our tests, the Outsunny Walk-In Greenhouse with Shelves offers the best value for money. It provides a generous walk-in space, integrated shelving, and a durable cover at a very competitive price point, making it a fantastic all-around option for most gardeners.

Are cheap polycarbonate greenhouses any good?

Cheap polycarbonate greenhouses can be a good step up from plastic-covered models, offering better insulation and durability. However, the quality of budget options can vary significantly. Look for twin-wall polycarbonate panels (for better insulation) and a sturdy aluminium frame. They are generally more wind-resistant than plastic models but will still require a solid, level base.

How can I build a greenhouse on a tight budget in the UK?

One of the most popular DIY methods is a polytunnel-style greenhouse using PVC or metal conduit for the hoops, a wooden frame for the base and ends, and covering it with horticultural-grade polythene sheeting. You can also build a simple cold frame using reclaimed windows and timber to protect seedlings and overwinter plants.

What features should I avoid to save money on a greenhouse?

To save money, you can forgo features like automatic vent openers, elaborate staging, toughened safety glass (polycarbonate or horticultural glass is cheaper), and large, ornate designs. A basic, functional polytunnel or a simple metal-frame greenhouse will provide the same core benefits of extended growing seasons without the high cost.

How long will a cheap greenhouse last in the UK weather?

The lifespan depends heavily on the model and how well you secure it. A well-anchored plastic greenhouse with a reinforced PE cover can last 2-4 years before the cover may need replacing due to UV degradation. The frame itself can last much longer if it’s powder-coated to resist rust.

What are the hidden costs of buying a budget greenhouse?

The main hidden costs are often related to creating a proper foundation and ensuring stability. You may need to buy a base plinth, paving slabs, heavy-duty ground anchors, or materials to build a level wooden deck. You might also want to invest in better-quality staging or shelving if the included ones are flimsy.

Where can I find the best deals on greenhouses in the UK?

Online marketplaces are often a great source for competitive pricing on a wide variety of models. Additionally, keep an eye on seasonal sales at large DIY stores and garden centres, especially towards the end of summer or in early autumn, when they may be clearing stock.

Conclusion: Our Final Recommendation

After rigorous testing and comparison, we are happy to reaffirm our top recommendation. The Outsunny Walk-In Greenhouse with Shelves stands out as the best cheap greenhouse for most UK gardeners. It successfully combines the practicality of a spacious walk-in design with the organisational benefits of two-tier shelving, all enclosed within a durable PE cover that creates an ideal growing environment. While it requires some extra attention to anchoring to prepare it for British winds, its core design is solid, its assembly is straightforward, and the value it delivers is simply unmatched in this category. It’s the perfect choice for extending your growing season without stretching your budget.