vertical forest
n. A tall building designed in a way that enables trees to be planted on all or most of its balconies.
Modern architects have long dreamed of building vertical forests. Now, growing urban density and the strain it puts on green space are pushing their vision forward, here and abroad.
—Alex Bozikovic, “Green mile,” The Globe and Mail, May 11, 2016
Today, the development has 360,000 square meters, or 3.9 million square feet, of residential, office, retail and cultural space. Among them are the two towers of Bosco Verticale, or Vertical Forest, named for the hundreds of full-size trees to be planted on the buildings’ balconies.
—Eric Sylvers, “For Evidence of a Rebound in Milan, Just Look Up,” The New York Times, March 13, 2014
The colossal columns are tiered up on four layers so that all the trees have enough space to grow upward. This composition of trees enables people everywhere in the building to enjoy urban views through the leaves of trees, in contrast to stark interiors of generic office space. The green giant order creates the facade like a vertical forest.
—Alison Furuto, “Trees Building for ABBANK Proposal / Vo Trong Nghia Architects,” ArchDaily, February 25, 2013
2009 (earliest)
The 'CO2 Scraper' is a giant skyscraper that is essentially a vertical forest. It can hold 200-400 large trees, which naturally absorb carbon dioxide and convert it into oxygen.
—Marissa Brassfield, “Air-Filtering Architecture,” TrendHunter, February 09, 2009
The Bosco Verticale (Vertical Forest) in Milan, Italy. Source: Wikipedia