First, a quote from the MillionTreesNYC website about the tree planting campaign:
MillionTreesNYC, one of the 127 PlaNYC initiatives, is a citywide, public-private program with an ambitious goal: to plant and care for one million new trees across the City's five boroughs over the next decade. By planting one million trees, New York City can increase its urban forest—our most valuable environmental asset made up of street trees, park trees, and trees on public, private and commercial land—by an astounding 20%, while achieving the many quality-of-life benefits that come with planting trees.
We've been eyeing four trees on West Broadway (not to be confused with the western section of Broadway) planted as part of the city's million tree-planting campaign. The trees are a mix of pin (Quercus palustris) and red (Q. rubra) oaks which can attain mature heights of up to 75 feet (with a 40 foot canopy) and 90 feet, respectively. Note the gardens planted in the tree basins. The garden in the second photograph has not thrived.