The Prouty Garden’s days are numbered.

The cherished green space at Boston Children’s Hospital, slated to be demolished to make way for a new clinical building, will close “within the next several weeks,’’ hospital officials said this week. The plan faces strong opposition from a group that has gone to court to try to save Prouty Garden.

Children’s held events “honoring’’ the garden this week, with music, lights, and refreshments. The ceremonies were open to hospital staff and patient families, but closed to the public and the press.

“Recognizing the important role that Prouty Garden has played in the lives of our employees and community, this week Boston Children’s is hosting events for staff honoring the garden and sharing information about plans for improved patient care and experience,’’ hospital spokesman Rob Graham said in a statement.

Hospital officials have tried to appease opponents by stressing that they will incorporate new, bigger green spaces into their refurbished campus. Plans call for a ground-level garden, a rooftop garden, and indoor gardens. The new green spaces will include some of the plants and statues now displayed in Prouty, and some seeds and leaves will be preserved and displayed as art in the new hospital building.

But those who oppose the hospital’s plans called the ceremonies empty gestures that do little to address their concerns.

“From our standpoint, it’s not a good thing at all,’’ said Gus Murby, an opponent who is part of a group suing the hospital over its construction plans. “It’s a stone-cold cynical move, to be honest with you. It’s this continued intransigent disregard for arguments to preserve the garden.’’

Children’s plans to open one of its new gardens next fall, but the other new spaces will not be ready until to mid- to late 2021, hospital officials said.

Meanwhile, the lawsuit against Children’s is continuing in Suffolk Superior Court. Separately, opponents are also appealing the decision by state regulators to allow the controversial expansion project to move forward.

Children’s is planning a $1 billion expansion that will include an 11-story building on the site of the Prouty Garden and an eight-story outpatient center in Brookline. Opponents say the expansion should not come at the expense of the beloved garden. Many also have raised concerns that the project will raise health care costs because Children’s, while it is one of the top hospitals in the country, is pricier than its local competitors.

Priyanka Dayal McCluskey can be reached at priyanka.mccluskey@globe.com. Follow her on Twitter @priyanka_dayal.