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Small cedar greenhouse

The best mini greenhouses for your garden

Whatever the size of your garden or outdoor space, growing under glass offers great opportunity

If you want the added benefit of growing under glass but don’t necessarily have the space for a full-sized greenhouse, tiny greenhouses offer possibilities within a much smaller footprint.


Glasshouses are designed to be practical protection for plants that fare better when not exposed to the elements. Light is allowed to reach inside whilst wind and rain are kept out. The result is a mild, often warm microclimate that’s perfect for all kinds of potted garden plants, from brand new seedlings to tomato vines. Even for plants that prefer shade.

We’ve collated a list of some of the best mini greenhouses on the market, from table top glass terrariums to 6ft wooden and metal glass houses, available to buy online in the UK.

For more inspiration on growing with greenhouses, discover some of the best Victorian greenhouses for your garden. 

The best mini greenhouses to buy in 2021

Forest garden mini greenhouse
Garden Chic

Forest Garden Mini Greenhouse 

The props to hold up the glass roof of this Forest greenhouse are a nice feature, as are the two front doors hinged at the side for easy access. Thanks to styrene-insulated walls, this mini greenhouse offers great plant protection during winter months. 

There are also two internal shelves and a space at ground level for storing bags of compost, plant pots or garden tools. A 15-year rot guarantee comes as standard. 

  • £285

Available from Wickes or Garden Chic (144cm x 120cm) 

best mini greenhouse, rowlinson hardwood mini greenhouse
Garden Chic

Rowlinson Hardwood Mini Greenhouse

Twin walled polycarbonate glazed panels form the panes of this two-tier mini greenhouse.

It’s recommended that you use a good quality wood treatment on the FCS certified Eucalyptus frames to keep them weatherproof for long periods, but this mini greenhouse is made of sturdy stuff. It should provide well insulated shelter to all your little plants.

  • £289.99

Available from Garden Chic (144cm x 120cm) 

Outsunny 3-Tier Outdoor Garden Wooden Greenhouse

Outsunny 3-Tier Outdoor Garden Wooden Greenhouse

If you’re looking for budget-friendly alternative to the traditional glass-pane Victorian greenhouse, this fir-wood edition uses anti-UV PC board as a durable protective barrier.

Two slatted shelves offer space for stacking seedlings. A hinged roof can also be left open to give plants an extra boost of sunlight.

  • £86

Available from Aosom 

Tomato House

4ft Aluminium Tomato Grow House

An aluminium grow house which comes with a 25-year guarantee; a fair indication that it has been designed to last.

It’s purpose-built for tomato plants and offers unobstructed room for vines to grow upwards without being vulnerable to the elements like wind. There’s no base, which allows for good plant drainage and means it can be sat on the patio or anchored into gravel or soil. 

  • £429

Available from Garden Chic 

Nordic mini greenhouse
Nordic Nest

Mini greenhouse 

When we say mini, we mean mini. This little greenhouse is a tabletop version of a full-sized design by Design House Stockholm that’s both simple and stylish. 

It’s a minimalistic lacquered ash wood, glass and galvanized steel frame, 34cm in height and 48cm wide and would be great for sensitive houseplants or herb gardens that would benefit from a warmer temperature.

  • £303.49  

Available from Trouva 

Halls mini greenhouse
Garden Chic

Halls Wall Garden mini greenhouse  

Another upright option for protecting your plants is this aluminium finish small greenhouse. The slim frames mean plants within get almost unobstructed sunlight without having to withstand wind. 

 The shelving is optional, which is good if flexibility is something you’re looking for when it comes to a mini greenhouse. There’s also a roof vent for climate control. 

  • £249

Available from Garden Chic  (4ft x 2ft) 

Halls 6 x 2 mini greenhouse
Garden Chic

Halls 6ft x 2ft Greenhouse

The bigger sibling to the 4ft x 2ft Halls greenhouse above and gives you an extra 2ft and another movable set of shelves. 

Its charm arguably lies in its simplicity – built for easy assembly and minimal faffing. Horticultural glass conducts heat and allows UV rays to reach your plants so you can count on this mini greenhouse being a slightly warmer environment for keeping your plants in. 

  • £299

Available from Garden Chic (6ft x 2ft)

Latchmere Raised Cold Frame - Pine - Closed - PLOR02
Garden Trading

Latchmere raised wooden mini greenhouse 

The Latchmere cold frame is a dip treated pine potting unit designed with a lifting lid to be a durable and protective barrier against the elements.

An extra shelf  below the box is an additional space for organising any gardening bits and bobs lying around. 

  • £140 (4ft x 2ft)

Available from Garden Trading 

Pasua Pyramid Terrarium, Nkuku

Pasua Pyramid Terrarium 

Terrariums are some of the smallest mini greenhouses around, but the theory behind them follows the same principles as full sized greenhouses.

Maximum light is allowed in, climate can be controlled and the overall effect should be some happy looking plants to admire. We love this little decorative terrarium by Nkuku. 

  • £39.99

Available from Nkuku 

Juliana Balcony Greenhouse

Juliana Balcony Greenhouse 

This is the optimal of a space-saving mini greenhouse, designed to hover above the ground and be attached to sturdy railings or barriers.

Indoor and outdoor space can be at a premium, particularly in city settings. So a greenhouse that doesn’t take up any floor space like this Juliana Balcony Greenhouse provides glasshouse protection in an unobtrusive package. 

  • £429.99

Available from Garden Street

Small cedar greenhouse
Woodpecker Joinery

Tall cedar cold frame 

A tall cedar cold frame designed to be versatile. There are four opening lids and robust roller doors for easy opening whilst your hands are full. Its two-tier adjustable shelves are also removable incase you have growing vines like tomatoes or roses to keep protected from the elements. 

Its aluminium handles and hinges are a nice touch. Choose from three different wood stains to find the best fit for your garden.

  • £1,345

Available from Woodpecker Joinery (8ft x 2ft) 

Hampton mini greenhouse set
Hartley Botanic

Hampton Mini Greenhouse

If you have a wall or fence that could do with some cheering up, the Hampton Mini Greenhouse is designed to stand against them and comes with fixings for attaching it securely.

Its aluminium structure comes with a 25-year framework guarantee and 4mm toughened glass lets the light in whilst keeping wind out. Particularly nice are the rung bars that make up the shelves. The spacing allows excess water to drain. Plus if you have plants that like to hang down, they’re allowed to freely do so.

  • £344

Available from Two Wests and Elliott

Lean-to Greenhouse LT62
Dovetail Greeenhouses

Lean-to Greenhouse LT62

The sloping roof is a feature synonymous with lean-to greenhouses, which are typically tall enough to stand in. This edition can be a glass-to-ground structure or be built onto a dwarf wall which gives you some good versility when choosing your mini greenhouse.

Depending on the size of your space, it’s also  available in 4ft, 6ft or 8ft.

  • £372.30

Available from Dovetail Greenhouses

Mini wooden greenhouse

Mini greenhouse 

We love this diminutive greenhouse from Homebase which is a great option if you have a collection of small to medium plants. 

Whether you’re keen to harden your seedlings or have simply run out of space for pot plants indoors, this small wooden greenhouse should offer much needed protection. 

  • £66

Available from Homebase 

Victorian Lean-to Greenhouse by Forest Garden

Victorian Lean-to Greenhouse by Forest Garden

This three-tiered wooden mini greenhouse is designed to stand flush against a wall and has a sloping roof to channel rainwater away from its contents, making it a good option if space is at a premium.

Its tongue-and-groove construction is made of pressure-treated wood and designed to be watertight, whilst protected by a 15-year guarantee against rot for good measure. 

  • £549.99

Available from Primrose