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.
Modern is a Janssens greenhouse line, not just a style. These are European-engineered glass greenhouses built by Janssens and distributed by Exaco. Each one has a single-slope sloping roof, a sleek black aluminum frame and wide glass panels. The result is a minimalist structure that looks at home beside contemporary architecture and still gives plants plenty of light.
Three Sizes, One Signature Look
- Modern M23 (8ft x 10ft): the right footprint for smaller yards, seed starting, herbs and a few prized plants.
- Modern M34 (10ft x 15ft): room for growing benches plus a seating corner, so it works as both a garden and a sunroom.
- Modern M36 (10ft x 20ft): the flagship, for serious year-round growers, larger collections or a backyard greenhouse office.
Not sure which fits? Read our guide to choosing greenhouse size.
Why Choose Modern Over Other Janssens Models?
The Royal Victorian and Retro lines lean classic, with ornate ridges and traditional proportions. Modern takes the opposite approach: flat planes, a clean sloping roofline and a low-profile silhouette that suits modern homes. You still get Janssens' quality glass and aluminum. It's a natural pick if your greenhouse will be the centerpiece of your landscape design. Matching roll-up roof shade curtains are sized for each model.
🌿 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.
Modern Greenhouse FAQ
Is Modern a style or a specific product line?
It's a specific Janssens line made up of the M23, M34 and M36 greenhouses.
Do Modern greenhouses need a foundation?
Yes, a level, solid base is recommended. See our foundation options guide.
Can I use a Modern greenhouse year-round?
Yes. With proper ventilation, shading and heating, all three sizes support four-season growing.