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John Siemon

Director of Horticulture at the Botanic Gardens and Centennial Parklands
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John is a horticultural scientist and has been the Curator Manager of the Australian Botanic Garden Mount Annan since 2014. His interest in horticulture started at a young age, growing up in the leafy suburbs of Brisbane where he was fascinated by the world around him, and how the tallest trees could grow from the smallest seed.

Horticulture expertise 

Having worked for CSIRO and the University of Sydney, John has been with the Botanic Gardens & Centennial Parklands since 2003. First managing laboratories and science infrastructure, he now oversees the largest botanic garden in Australia focussed entirely on native flora.

As a Horticultural Scientist, John has worked predominantly in plant physiology, plant breeding, tissue culture and germplasm conservation. He has worked on a range of horticultural and agricultural crops including rice, tomatoes, soybeans and probably Australia’s most famous export after Paul Hogan - macadamia nuts.

John’s most significant achievement to date has been project managing the Australian PlantBank, including securing $19.8 million dollars in fundraising, architectural design and construction of this national repository for native plant seeds.  PlantBank will one day be home to all of Australia’s 25,000 species of plants.