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Large Greenhouses

A large greenhouse gives you the space to grow properly. Room for raised beds, staging, tall crops, and everything in between. At Halls Greenhouses, we offer a wide range to suit different gardens and needs – from the spacious and versatile models in the ICON range to the light, timeless design of the Qube 8. Whether you're a dedicated vegetable grower or looking to create a beautiful garden retreat, you'll find a large greenhouse here that's built to last and backed by our 12-year warranty.

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A large greenhouse is a freestanding growing structure with enough internal space to move around freely, create dedicated growing zones, and garden comfortably throughout the year. At Halls Greenhouses, that includes spacious models from the modern ICON range as well as the light, timeless Qube 8 – all designed to provide practical growing space, lasting quality, and plenty of room to make the greenhouse your own.


Why Choose a Large Greenhouse?


More space changes how you garden. With a proper footprint, you can dedicate zones to different crops, keep a potting bench, and actually move around comfortably without squeezing past your plants.


There's a practical side and a less tangible one. A larger structure extends your growing season from early spring through to late autumn, protecting tender plants from frost and giving heat-loving crops like tomatoes and cucumbers the warm, sheltered conditions they need. But for many gardeners, a large greenhouse also becomes somewhere to spend time, not just tend to plants.


Finding the Right Large Greenhouse for Your Garden?


Halls Greenhouses offers large greenhouses with different designs and features, so you can choose a model that suits both your garden and the way you want to use it.


Large greenhouses with a modern design


The ICON range combines clean lines, balanced proportions, and toughened glass with generous growing space. The ICON Planthouse is designed with extra height for tall plants, while the ICON Gardenhouse brings an orangery-inspired character that works equally well as a striking garden feature and a practical growing space.


The Halls Qube 8 offers a lighter, timeless alternative, combining a clean design with a strong aluminium construction and plenty of space for plants, staging, and everyday growing.


Not sure which size is right for you? It’s worth measuring carefully before making your decision. Once your greenhouse is in place, the right accessories – from staging and shelving to watering and heating – make it easy to get the most from the available space.


Not sure which size is right for you? Our greenhouse sizes guide can help you measure up before you decide. And once your greenhouse is in place, our greenhouse accessories, from staging and shelving to irrigation and heating, make it easy to get the most from the space.


Large Greenhouse FAQs


What counts as a large greenhouse?


There's no fixed rule, but a large greenhouse is generally understood to be one that gives you enough internal space for proper pathways alongside staging on both sides. That's the point at which the growing experience starts to feel genuinely different from a compact model.


Which large greenhouse is best for growing vegetables?


Look for ventilation options and usable floor area. The ICON Planthouse is purpose-built for taller crops, and adding roof vents or louvre blades from our accessories range helps keep temperatures in check through summer. If you plan to grow year-round, it's worth pairing your greenhouse with a heater from the start. See our greenhouse heating accessories for what fits each model.


What glazing should I choose for a large greenhouse?


Toughened glass is a great choice, and with good reason. It keeps light transmission high, stays clear over time, and is far safer than standard horticultural glass if it ever breaks. Polycarbonate insulates better and is lighter, which suits some situations, but it can yellow over time. Our glass vs polycarbonate guide covers the full picture if you want to compare properly before deciding.


What base do I need for a large greenhouse?


It needs to be solid and level. Even a small amount of unevenness can cause doors to stick and frames to sit out of square, so it's worth getting right before the structure goes up. Concrete, paving slabs, and treated timber decking all work well. Our greenhouse bases are sized to match each model exactly.



Ready to Find Your Perfect Large Greenhouse?


Browse the full range above, or get in touch with the Halls Greenhouses team if you'd like a hand choosing. We're here to help you find a greenhouse that fits your garden, your growing plans, and your budget.