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Trees found in cities such as the London plane or the tulip tree, are excellent at absorbing carbon dioxide and removing pollutants from the air.

For reasons that are not fully understood, several hundred parrots seek evening accommodations each night in the limbs of fig and London plane trees lining a bustling stretch of Rosemead Boulevard in Temple City.

The design’s path, meandering downhill beneath a canopy of London plane trees and crisscrossing a stream, led viewers into a sunken oval bowl teeming with a luxurious planted garden.

Village green zelkova, Italian oak and London plane add additional color to the route.

The work began at a wrinkled grayish London plane tree next to the Walla Walla High School football field.