New residents in the revitalized Regent Park appear to be thriving. But the same can't be said for its newly-planted trees.

Scores of them have died in the past few years, residents say, and they want the city to do more to solve the mystery.

"The sense I'm getting is that there's a fair bit of buck passing, so no one's addressing it," Stephanie Beattie, who's lived in the neighbourhod for about two years, told CBC Toronto. "It sounds like there's a lot of confusion."

She says she's counted 60 trees in a park-area bounded by Dundas Street East, Gerrard Street East, Sumach Street and Sackville Street.

Coun. Mary-Margaret McMahon, who chairs the parks and environment committee, acknowledged there's a problem keeping the tree healthy.

Stumps are all that remain of scores of trees in the new Regent Park. The city blames inadequate soil. (Makda Ghebreslassie)

"In this particular case it's because of inadequate soil," she told CBC Toronto on Wednesday. "So we are looking at remediation of soil, and planting of hardier trees as well, and better maintenance of the trees."

An email from city parks and forestry department spokesperson Matt Cutler acknowledged that some of the neighbourhood's trees "have not survived." He says soil analysis will begin this month, and new plantings should happen in the fall.

Coun. Mary-Margaret McMahon (Ward 32, Beaches - East York) chairs the city's parks and environment committee, which is looking into ways of ensuring the trees in Regent Park thrive. (Makda Ghebreslassie)

McMahon said the developer is responsible for covering whatever costs are involved in rehabilitating the area's tree coverage, since it was responsible for ensuring the original plantings were done with proper trees and proper soil.