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Small Greenhouses
Best Selling Small Greenhouses
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Elite Streamline 5x4
made to order
Free Autovent Arm
£584
SAVE £80
Elite Streamline 5x6
made to order
Free Autovent Arm
£609
Free Installation
Swallow Lark 4x4 Wooden
made to order
Free Installation
£2,575
About Our Small Greenhouses
Our collection features over 100 small greenhouses for compact gardens, balconies, and patios. We stock everything from budget-friendly mini grow-houses (£150–£400) to premium small wooden greenhouses starting from £800. Our premium wooden models include free professional UK installation, while other types are available with optional installation services.
Popular choices include space-saving small lean-to greenhouses that attach to walls, standalone 4x4 greenhouses, and versatile 4x6 greenhouses. You'll find aluminium frames with polycarbonate glazing (low maintenance, rust-proof), traditional timber models with toughened glass (superior insulation), and compact cold frames for seasonal growing.
Types of Small Greenhouses We Offer
Small Wooden Greenhouses
Our premium freestanding range (£800–£2,500+) features thermowood timber frames that resist rot 40% better than standard softwood. These models include free professional installation, 12-year structural warranties, and 4mm toughened glass offering 85% light transmission. Best for year-round growing and garden aesthetics.
Small Lean-to Greenhouses
Space-saving designs (£600–£1,800) that attach to walls, fences, or house sides. Available in wooden or aluminium frames with sloped roofs that maximise limited space. Benefit from wall heat retention (reduces heating costs by 30–40%) and ideal for courtyard gardens, narrow side passages, or patios. Professional installation included with wooden lean-to models.
Small Aluminium Greenhouses
Mid-range freestanding options (£400–£900) with rust-proof frames and polycarbonate or glass glazing. Lightweight, low-maintenance, and designed for straightforward DIY assembly. Optional installation service available nationwide.
Mini Grow-Houses & Cold Frames
Compact solutions (£150–£350) perfect for balconies, patios, or seasonal propagation. Polycarbonate construction provides UV protection and insulation. Simple 30–60 minute assembly with basic tools.
Choosing Small Greenhouses: Quick Guide
💡 Tip: Measure your space and subtract 60 cm on all sides for door access and maintenance. A 4x4 greenhouse provides 16 sq ft of growing space (15–20 medium pots), while a 6x4 model offers 24 sq ft (25–35 plants with staging).
Budget considerations: compact grow-houses cost £150–£350, aluminium models range £400–£900, and premium wooden greenhouses start from £800. All prices include free UK delivery. Wooden models include professional installation; other types offer optional installation at £150–£250 depending on size.
Look for automatic roof vents (prevent temperatures exceeding 35 °C), proper door locks, and UV-resistant glazing. Most customers choose 4 mm polycarbonate (practical, affordable) or 4 mm toughened glass (superior clarity and heat retention).
Frequently Asked Questions
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How much do small greenhouses cost?
Our small greenhouses range from £150 for compact grow-houses to £2,500+ for premium wooden structures. Aluminium models with polycarbonate glazing cost £400–£900. Premium wooden greenhouses (£800–£2,500+) include free professional installation. All products include free UK delivery.
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What size small greenhouse do I need?
A 4x4 greenhouse suits balcony gardeners growing 15–20 pots, while a 4x6 or 6x4 model accommodates 25–35 plants with staging. Measure your space and subtract 60 cm on all sides for door access and maintenance. Internal height typically ranges from 1.6 m (compact models) to 2 m (premium structures).
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What can I realistically grow in a small greenhouse?
A small greenhouse is perfect for starting seedlings early, overwintering tender plants, and growing high-value crops. A 4x6 or 6x4 space is ideal for salad greens, herbs (basil and coriander), chillies, and dwarf tomato varieties. Mini grow-houses or cold frames work best for hardening off seedlings and protecting herbs through winter. See our Greenhouse Growing Guide for seasonal planting schedules.
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Can I install a small greenhouse myself?
Yes, most aluminium and polycarbonate models are designed for DIY assembly by 1–2 people in 2–4 hours with basic tools. However, our premium wooden greenhouses include free professional installation (completed in 3–4 hours) to ensure perfect levelling, prevent door misalignment, and validate the manufacturer's warranty.
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Do small greenhouses need foundations?
All small greenhouses require level foundations. Paving slabs (£80–£120) suit most aluminium and compact models. Wooden greenhouses typically include timber base frames or require concrete bases (£200–£300) for structures over 6x6. Our installation team assesses your site and recommends the best foundation type.
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How long do small greenhouses last?
Lifespan depends on materials. Aluminium frames last 15–20 years with minimal maintenance (rust-proof, no painting needed). Premium wooden greenhouses with thermowood frames last 25–30 years—apply optional wood oil every 4–5 years to maintain colour, though the timber itself requires no chemical treatment for rot prevention. Polycarbonate glazing lasts 10–15 years before UV degradation reduces clarity.
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Are small lean-to greenhouses better than freestanding?
Small lean-to greenhouses save space and benefit from house wall heat, reducing winter heating costs by 30–40%. However, they receive less sunlight (typically 60–70% of freestanding models) and limit plant variety. Choose lean-to for herbs or propagation; pick freestanding for year-round vegetable growing and maximum flexibility.
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