In addition to countering the heat island effect, the greening of Peter McGill’s Quartier 21 gives the project immediate visibility.

Private Domain
In spring 2009, owners, merchants and organizations of the Saint-Mathieu Street, Saint-Marc Street and Boulevard De Maisonneuve were offered to participate in the greening project.

In June 2009, participants in the greening project includes:

On Saint-Mathieu Street :

• 1420 Saint-Mathieu Residential apartments
  
• Anatolia, vente de pizzas
  
• Bocca-Doro, Italian restaurant
  
• Origami, Communication Agency
  
• New York system, Laundromat

On street De Maisonneuve (interventions in autumn 2009):

• 1801 De Maisonneuve, the building housing the CLSC Métro
• 1864 De Maisonneuve, the building owned by Triada Corp.

• The alley beside Ste-Catherine near the composting site is a Green Alley.
  
• The flower patches placed beneath roadside trees in the Quartier 21 are in bloom.
  
• A formal application for development in the public domain (Physical median to separate the bike lane from traffic, trench’s excavated beside buildings for greening on St. Mathieu ...) will be filed during the summer of 2009.