Green walls
One of the most known and trendy sustainable solutions are living green walls i.e. vegetation growing on or against a vertical surface. They can be installed inside or outside a building. There are many types of these walls ( e.g. they can be freestanding or attached to the surface ) but they are usually constructed in the same way. Living walls are comprised of plants and attached to a panel. To keep the wall alive, green and luscious you need a drip-irrigation system. Among the biggest advantages of these solutions are improved air quality, noise reduction and increase in property value. It has also been found that proximity of plants can have a positive impact on people’s well-being. Also, simply seeing nature at work can increase job satisfaction. Although they have many benefits living green walls are an expensive option and can be difficult to maintain. It’s also hard to tell how long they can last. For the time being they are one of the most interesting and visually appealing sustainable design solutions.
A cable-supported green wall facade in Switzerland
https://www.naava.io/editorial/what-are-green-walls
https://www.ambius.com/green-walls/ultimate-guide-to-living-green-walls/

I guess they need a huge amount of maintenance and still the plants will probably die quite soon as they are not planted in real soil.
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