Remove soil from Ginkgo tree roots

At the Arnold Arboretum of Harvard University (the oldest public arboretum in North America), a tool called the Supersonic Air Knife helps to safely and efficiently aerate compacted soil, expose and correct tree root problems, and transplant large trees bare-rooted.
In this video, Arboretum Director Ned Friedman lends a hand with the tool to blow away the soil from a Ginkgo biloba tree, wild collected in China by Senior Research Scientist Peter Del Tredici. This tree was moved from Peters Hill to a new location in the landscape of the Weld Hill Research Building.

More info here.

Ginkgo walk Washington University

U.S. Poet Laureate Howard Nemerov, longtime faculty member of Washington University in St. Louis, loved Ginkgo trees. He wrote the Ginkgo poem "The Consent" which can be read on my website.
A hand-drafted copy of the full poem hangs outside the entrance to Olin Library's Ginkgo Reading Room. The university shows its Ginkgo walk on webcam here.

Robins in Ginkgo tree

Three little blue robin eggs in the Ginkgo tree nest.
Video by dapvettes on YouTube.

Fisheye photo: Yellow Ginkgo leaves

Special fisheye photo of yellow Ginkgo leaves in Japan by Abemassayuki on Flickr.com.

Ginkgo tree symbol of Seoul

The Ginkgo tree is the symbol of Seoul, South Korea.

Video uploaded by nexyglo on YouTube.