
Since 1921, Alton has crafted premium cedar greenhouses that combine Grade-A knot-free wood with a sturdy aluminum frame and precision tongue-and-groove joints, offering lasting strength, beauty, and an ideal environment for gardening and growing.








Experience unmatched durability with our German-engineered hybrid, twin, and triple-wall polycarbonate greenhouses, designed for year-round protection and growing in all climates.






Our Original Victorian greenhouse designs from Janssens of Belgium create a focal point in any garden with luminous glass, graceful lines, and uncompromising durability.









The right greenhouse accessories help you do more. Shades, vents, and shelving add comfort and convenience while creating the perfect setting for happy plants and better growing.




Durable and designed to inspire, our garden rooms make the perfect spot for work, art, music, or whatever sparks your creativity. Easy to set up and built to last, they bring your workspace outdoors for the best view.




Make every moment memorable with outdoor structures perfect for relaxing and entertaining. Socialize and unwind stress-free in spaces designed for good times and great company.




Exclusively by Janssens
Don’t see what you’re looking for? Janssens glass greenhouses can be custom-ordered with a variety of modifications, including shape, size, and accessories. Try out the greenhouse configurator and show us your ideal model.
Discover inspiration, tips, and seasonal ideas to embrace greenhouse living and bring natural beauty into your everyday life.
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