Marion Blackwell

Marion Isabel Blackwell (3 April 1928 – 22 August 2026) was an Australian landscape architect and ecologist.

Life and career Born on 3 April 1928, Marion Blackwell grew up on a station eighteen miles from Manilla, New South Wales with her three siblings. She gained early education about the land and gardening from an Aboriginal stockman who worked at their station, and her grandfather. Instead, she enrolled in a Bachelor of Science at University of Sydney, majoring in plant physiology and ecology.

Blackwell founded a landscape architecture firm Blackwell and Associates in 1987 with her son Tony.

In 1991, Blackwell became chairperson of the advisory committee to the Australian National Botanic Gardens. Then in 1995, she was appointed to the board of Western Australia's Environmental Protection Authority.

Blackwell died in Perth on 22 August 2026, at the age of 98. She was survived by her husband and three children.

Awards 1987 – Western Australian Civic Design Award 2011 – Member of the Order of Australia 2018 – Honorary Doctorate from Murdoch University