About the manufacturer
Janssens (imported by Exaco)
Janssens is a Belgian manufacturer that designs and builds aluminum and glass greenhouses, best known for the Royal Victorian, Junior Victorian, Orangerie and Retro lines. Every model is made to be a permanent, beautiful part of the garden, with rot-proof aluminum frames, real glass and roof vents for airflow.
Exaco is the company that imports Janssens greenhouses into the United States and supports them here, so you get European craftsmanship with US-based service and parts.
The Janssens Gigant is the largest residential greenhouse Janssens makes. It is a built-to-order premium glass greenhouse for serious growers, market gardeners, and anyone who wants a greenhouse as a centerpiece of their garden.
Size & Availability
The Gigant comes in five sizes, from about 280 sq ft up to 500+ square feet. Each model is built to order with a 14– week lead time from order to shipment. This is the premium choice for people with the space and budget to invest in a showpiece greenhouse.
Why the Gigant?
Room. The Gigant gives you space for multiple growing zones, a seating area, and a workspace. It is made of the same premium glass, aluminum and vents as every Janssens model, so build quality does not compromise on size. If you are ready for a real greenhouse that defines your garden, this is it.
🌿 Why buy from Mulberry Greenhouses? We are a small, woman-owned business in Georgia. We answer every question personally, ship free to the continental US, can connect you with an assembly crew, and offer a Price Match Guarantee (please check the rules). Call 678-408-8222 for help choosing.
Gigant Greenhouse FAQ
How long is the lead time?
14 to 16 weeks from order to shipment because it is built to order. Plan ahead and call us to discuss timing.
Do I need a foundation?
Yes, a solid level base is essential. The Gigant's size means wind loads are real, so the foundation is non-negotiable.
How big is the footprint?
Depends on the size. The largest model is roughly 17 x 30 ft, so plan for significant garden real estate.