Green wall are vertical green infrastructure interventions. They provide infiltration areas for water and mainly function as visual and noise barriers between roads/industrial areas and public spaces. The vegetation grows directly on the wall, or climbs on a frame or already structured wall, but keeps a small distance from the wall.
Benefits
(+) Aesthetically important
(+) Heat regulation indoor and outdoor
(+) Noise protection
(+) Increased habitat connectivity and provision
(+) Shelter from the sun radiation
(+) Air purification
Limitations
(-) Mostly depended on irrigation
(-) When the vegetation is dry, it could be susceptible to fire
(-) Requires a long time span before walls are fully covered for ground-based greening.
Assessment
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