More than a year ago, Tishman Speyer made headlines when it paid $5.4 billion to purchase Stuyvesant Town and Peter Cooper Village in New York City from MetLife. Now, the apartment owner has decided the mammoth complexes need a facelift.

“One of the reasons people love Peter Cooper Village and Stuyvesant Town is its more than 60 acres of open green space—a rarity in Manhattan,” says George Hatzmann, managing director for Tishman Speyer. “We want to enhance the park-like atmosphere to create an even more beautiful environment for our residents.”

By June 30, Tishman plans to have added 200,000 plants, including 10,000 trees, 3,123 shrubs, and 120,906 perennials to the two properties. Tishman declined to release the cost of the initiative.

Matt Bonham, associate landscape architect for Peter Walker and Partners, the Berkeley, Calif.-based landscape architecture firm handling the project, said the site's existing trees helped create an attractive setting. “[There is] a beautiful existing tree canopy,” he says, adding that although that canopy provided shade, it limited the types of flowers that could be planted underneath. “[The flowers being planted] will thrive in shady conditions.”

Erik Pauzé, lead gardener for the project, says Tishman won't use chemicals or fertilizers with the plants. Instead, it will use worms and lady bugs to fight insects. “It's going to feel like you're out in the country,” Pauzé says.