Mini Lean-To Greenhouses with Backs

About our mini lean-to greenhouses with backs

Mini lean-to greenhouses with optional glazed back panels solve a common problem. You want a lean-to but have no suitable house wall. The back panel turns an open-backed lean-to into a self-supporting unit. Place it against a fence, shed, hedge, or use it freestanding on a patio. We stock 14 models from Access and Stali, all with toughened safety glass and aluminium frames. Prices start from £355 with free UK delivery and a 25-year warranty.

The range covers four product types. Compact 2x4 growhouses are the entry point for herbs and seedlings. Hampton and Harewood lean-tos add 4mm glass and mist watering systems. The Exbury range offers the largest floor area at 3ft wide. The Stali 2x5 is a premium matte black design for modern patios.

Types of mini lean-to greenhouse we offer

Mini lean-to greenhouse comparison

Matt's pick: best mini lean-to with back Best For: Gardeners who want serious growing space against a fence or shed wall Why I Recommend It: The 2x5 Hampton gives you 6 adjustable shelves and a built-in mist watering system. The 4mm glass holds heat better than 3mm models. Add the optional back panel and it stands anywhere. Price: £740 View Product

Where can you place a mini lean-to with a back?

Anywhere you have a flat surface. The glazed back panel makes these greenhouses self-supporting. Common placements include fence panels, garden shed walls, garage side walls, and freestanding on patios or decking. The built-in gutters direct rainwater away from the base. Unlike open-backed lean-tos, you do not need to drill into or fix to the surface behind. Browse our small lean-to greenhouses if you need a larger wall-mounted option.

What is included as standard?

• Toughened safety glass, 3mm on growhouses, 4mm on Hampton, Harewood, and Exbury models
• Aluminium frame, rust-proof, maintenance-free, available in 6 powder-coated colours
• Adjustable seed tray shelves, 2 to 8 shelves depending on the model
• Sliding doors, front and top access for easy watering and plant handling
• Built-in guttering, integral gutters on all models for rainwater collection
• Mist watering system, 2-tier system on Hampton, Harewood, and Exbury models
• Free UK mainland delivery, included with every order
• 25-year frame warranty, on all Access models (10 years on Stali)

Frequently Asked Questions

• How much does a mini lean-to greenhouse with a back cost?

  Prices start from £355 for the 2x4 Half Growhouse. The mid-range Hampton 2x5 with 4mm glass and mist watering costs £740. The largest Exbury 3x6 costs £1,253. The premium Stali 2x5 in matte black is £1,599. All prices include free UK delivery.

• Can I use a mini lean-to against a fence?

  Yes. Add the optional glazed back panel and it stands independently. The greenhouse rests against the fence but does not need fixing to it. Leave a 10mm gap between the back panel and the fence for airflow. This works with wooden panel fencing, close-board fencing, and concrete post-and-panel systems.

• Do I need a concrete base for a mini greenhouse?

  No. Any flat, level surface works. Paving slabs, decking, and compacted gravel are all suitable. The key requirement is a level surface. Check with a spirit level before assembly. These mini greenhouses are light enough to move once assembled if you need to reposition them.

• What is the difference between 3mm and 4mm toughened glass?

  4mm glass holds heat better and resists impact more than 3mm. Both are toughened safety glass that shatters into safe fragments. The growhouse models use 3mm. Hampton, Harewood, and Exbury models use 4mm. If your site is exposed to wind, choose a 4mm model. See our glass vs polycarbonate guide for more on glazing choices.

• How many shelves do these mini greenhouses have?

  Between 2 and 8 adjustable seed tray shelves depending on the model. The Half Growhouse has 2. The Hampton 2x3 has 4 and the 2x5 has 6. Exbury models have 8 shelves plus a toughened glass centre shelf. All shelves are height-adjustable to fit different pot and tray sizes.

• What colours are available?

  Access models come in 6 powder-coated colours. Standard silver aluminium is the base option. Colour upgrades include racing green, heritage green, old cottage green, anthracite grey, and black. The Stali 2x5 is only available in matte black. Colour options add a small premium to the base price.

• How long does assembly take?

  Most models take 1-2 hours to assemble. These are self-assembly greenhouses delivered flat-packed with all fixings and instructions. The aluminium frame bolts together and the glass panels slide into channels. No specialist tools are needed. Two people make the job easier for holding panels in place.

Planning rules for a mini lean-to

A mini lean-to with its own back panel still counts as a structure against a wall or boundary. The planning guide covers where you can put one.

• Lean-to and house-attached greenhouse planning in the UK - permitted development limits, boundaries and listed buildings.