She wrote a column for the Atlanta Journal Constitution and was the first woman to be elected an officer of the American Society of Landscape Architects.

[3] After college, Edith moved back to Atlanta, where she opened her own practice with fellow landscape architect Grace Campbell.

[4] Of this project, she later observed, We set it up so the entire design plan would be a green one, that in various times of the year there would always be something in leaf color or in flower.

[5]In 1939, she and Campbell were invited to develop the landscape plan for the neighboring Clark Howell Homes, another public housing project in Atlanta.

[6] In 1940, Henderson started writing a weekly gardening column Archived 2018-11-23 at the Wayback Machine for the Atlanta Journal-Constitution that ran until the late 1970s.

In addition to offering practical advice for gardeners, Henderson would write about her own projects as case studies.

[1] In 1971, the Garden Club of America honored Henderson with the Oakleigh Thorne Medal of Excellence in Landscape Architecture.