Gallery: Largest Green Wall in North America to be Unveiled Tomorrow!


Longwood Gardens is set to unveil North America’s largest green wall installation tomorrow! The extraordinary vegetated wall is installed at the historic garden’s new East Conservatory Plaza. The hallway’s radius creates an endless façade of ferns, and the expansive skylights flood the space with light to create an indoor green utopia. The system acts like a green lung for the new facility, and it was designed by GSky to be fully automated so that maintenance is reduced.

The building where the wall is installed was designed by Kim Wilkie in conjunction with Wells Appeal. The bermed, arching pod-like complex is open to one side and supports a natural outdoor amphitheater on the other. The interior green wall is a total of 4,072 square feet, which is almost twice the size of the second largest green wall in North America.

The majority of the astonishing 47,000 plants are ferns, which are embedded in a non-soil growth medium. Remote operated drip line irrigation and an array of sensors maintain the plants to help ensure quality control and longevity of the plants. The wall essentially acts like a filter and lung for the complex. An estimated 15,500 lbs of dust and toxins will be removed from the air each year, and the more visitors, the more CO2 for the plants to metabolize and exchange for O2.

+ Kim Wilkie Associates

+ GSky

Photos by L.Albee for Longwood Gardens


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  1. Gargantuan Living Wall ... November 1, 2010 at 10:41 am

    […] it’s not the largest living wall in North America, this vertical garden is certainly one of the most beautiful and diverse vertical gardens out […]

  2. ac_jaguar1 October 14, 2010 at 6:05 pm


  3. Andrew Michler October 8, 2010 at 10:49 pm

    Thanks Katie,
    My bad. The installer of the living wall is based in Vancouver but the gardens are in Pennsylvania here are the directions for anyone in the neighborhood–

  4. KatieA October 8, 2010 at 2:27 pm

    This article makes it sound like Longwood Gardens is in Vancouver, BC. It’s actually in Kennett Square, PA, about 30 miles west of Philadelphia and totally worth the trip!

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