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Greenhouses

Looking for the perfect place to let your green fingers work their magic? Delve into OnBuy's treasure trove of greenhouses! With everything from plastic and glass models to wood and aluminium alternatives (in all shapes and sizes, we might add!), you're bound to find the ultimate space to let your garden grow right here!

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Looking to buy Greenhouses?

Whether you're craving fresh lettuce in the middle of spring, tomatoes in the midst of winter, or an array of gorgeous blooms and plants all year round, our collection of garden greenhouses is packed with wonderfully weatherproof ways to help you make it happen. From small, walk-in greenhouses to bigger, polycarbonate models and Outsunny-branded alternatives, you’re sure to find your perfect match with OnBuy! 

A greenhouse is a structure that’s designed to grow and protect either vulnerable or out-of-season plants, typically from unfavourable weather conditions. They tend to be crafted from glass or plastic, and are surrounded by a thin, minimalistic frame that maximises the amount of natural light able to enter the structure. The walls trap the sun’s heat and energy, so a greenhouse will always be several degrees warmer than it is outside.

For those who are just starting out in the gardening game, purchasing a small greenhouse and looking after a few easy-to-manage plants can become a great pastime. 

The types of greenhouse on offer

Lucky for you, there are plenty of greenhouse designs to choose from when it comes to updating your garden. Traditional models tend to benefit from glass panelling (hence their slightly antiquated other name, ‘glasshouses’), with some showcasing panels of special horticultural glass, which allows as much light in as possible. Other glass greenhouses are made from toughened or reinforced glass which, in accordance with its name, is far less prone to breaking (a good choice for busy gardens with children and flying footballs!).

The final type of panelling that’s equally common is polycarbonate. This is made from a transparent plastic, meaning it cannot shatter (only tear or pop out of its frame, both of which are extremely rare occurrences). As such, it tends to be much safer and will typically last longer than glass. However, it often doesn't allow as much light in as glass, so placement is very important (particularly for smaller greenhouses).

You’ll also want to consider which frame material you’d prefer for your greenhouse. Wooden models are a popular choice as they’re very effective at retaining heat, though they do require frequent maintenance and treatment, in order to prolong their life expectancy. The reward, however, is an elegant, impressive centrepiece for your garden that will stand the test of time. Your other options are fibreglass or aluminium tubing, which are not as insulating as timber, but are far easier to maintain. 

Top tips for your greenhouse

Before you decide on the style and size of the best greenhouse for your garden, it’s important to understand a few key pieces of information. First off, there are a number of essential supplies that you’ll want to have ready before even thinking about planning your growing schedule. You’ll need containers to place the plants themselves in, sterile soil to reduce their risk of disease, plus some fertiliser and plenty of water. There are many weed and pest control products available too, should you wish to invest. 

During the spring and summer, your large greenhouse should be receiving plenty of natural sunlight, but at times it may benefit from some artificial lighting, such as an LED lamp or light strips, to ensure your plants stay strong and healthy. Plus, when there’s less light it’s likely to be chilly too, so if you’re very serious about keeping your plants in tip-top condition, consider buying yourself an electric heater to keep them warm. Your lean-to greenhouse should always be well ventilated. This will help to regulate its temperature and ensure there’s no ‘dead’ air inside. 

Most importantly, take great care with when and how much you water your plants. The best way to do this is by measuring the amount of moisture in the soil, either with a specific metre or by the sight and feel of it (if the soil is dry, you know it needs some water!). You may also wish to invest in a hydroponic greenhouse system, which will do a lot of the hard work for you.  

After something a little smaller to fit your petite outdoor space? Our cold frames are a fabulous way to protect your plants from the changing seasons and prepare them for life in your garden building. Or, maybe you’re after something on a much larger scale, like a round or hexagonal polytunnel greenhouse, to harvest a wider variety of plants and crops? 

Whatever style of gardening you opt for, you'll be well prepared for every season with our superb selection of greenhouses for sale.

Customers love our best-selling Greenhouses

Popular Brands in Greenhouses

Living And Home
VidaXL
GEEZY
Homcom
Outsunny
Oypla
Gr8 Garden
Garden Mile
Birchtree
Kingfisher
Tectake
Simply Chosen 4u
Charles Bentley
Christow
Harbour Housewares
Costway
Gardman
GardenKraft
Idooka
ProGarden
Von Haus
Rowlinson
Forest
Woodside
Shelter Logic

Our most popular Greenhouses

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