The Million Trees LA Initiative will involve planting native, drought-tolerant trees, targeting low-income areas.

Back in October 2006, Los Angeles Mayor Antonio Villarigosa announced his plan to plant a million trees in the city, although no due date has yet been announced. The trees are sought to make LA more beautiful, shaded, clean, and healthy by filtering air pollution and carbon dioxide. (Note: Trees respire and release CO2 and water, but they take in a much higher rate of CO2 via photosynthesis.) The planting will include native trees that require less water, with no mention of planting new palm trees.

Source: www.Milliontreesla.com