This is happening on the West Side.
The West Side Community Collaborative has a program called the Greening Initiative which has already re-treed Connecticut Street and Massachusetts Avenue. They've also planted trees on sections of Linwood Avenue and the area surrounding Millard Fillmore Hospital. They are currently working on Rhode Island Street and Vermont Street is next on the list. In addition, they've built five community gardens. Just this month they've planted 35 trees. Awesome stuff!
The Greening Initiative just won a $25,000 grant and is working on raising matching funds, in-kind donations and labor. There's a fundraiser this Saturday at First Presbyterian Church on Symphony Circle from 6:00 - 11:00 p.m. for anyone interested in supporting the effort.
Another exciting project is a co-op nursery planned for the West Side but I don't know too many details about that one. I'll try to find out more from the people involved.