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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 every garden style, from the clean lines of the modern ICON range to the timeless charm of the Cotswold collection. Whether you're a dedicated vegetable grower or building a beautiful garden retreat, there's a large greenhouse here built to last, 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, grow in dedicated zones, and garden comfortably throughout the year. At Halls Greenhouses, that means models from the classic Cotswold range to the contemporary ICON collection, all built for serious growing and long-term use.


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 models across two distinct styles, so there's a structure to suit most gardens.


Traditional style


The Cotswold range, including the Blockley, Broadway, and Burford, brings classic greenhouse character with a practical, well-thought-out setup. A solid choice for gardeners who want a traditional look without compromising on functionality. The Halls Magnum is a great option for those who need a generous amount of growing space in a dependable aluminium frame.


Modern style


The ICON range takes a different approach. Contemporary proportions, toughened glass, and a clean aesthetic that sits comfortably in a modern garden. The ICON Planthouse is purpose-built for tall plants, while the ICON Gardenhouse brings an orangery-style character that's as much at home as a garden feature as it is a growing space. The Halls Qube range offers that same strong, modern look with a solid aluminium frame.


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.