The vertical garden designed by landscape architect Alice Tricon contains 150 different plant species, 70 percent of them native, carefully selected considering their height on the building and exposure to sun and wind. Equal importance was given to protecting the urban fauna; MVRDV has incorporated low-carbon materials and collaborated with ecologists to include nesting boxes for local species of birds and bats. Emphasising its sustainable practices in resource management, La Serre connects to the city’s heating network using recovered wastewater.

La Serre's vibrant open façade not only enhances the biodiversity of Issy but also creates connections among residents and with the city, fostering social sustainability. Over 25 percent of the building’s inhabited area is dedicated to terraces and balconies, providing an average of 15 square metres of outdoor space per resident. Greenery, whether located in the communal areas or on private balconies, will be tended to by a dedicated gardener to ensure good maintenance. Stairs and footbridges connect all shared spaces, from the main hall on the ground floor to the urban window at the heart of the structure and the communal rooftop garden offering residents panoramic views of the city. This collective route promotes active use of the garden, transforming La Serre’s green façade into a vertical promenade and creating a sense of community among residents.