Angus Stewart's groundbreaking work with Australian native plants and his regular appearances on radio and TV (Gardening Australia) have seen him emerge as Australian gardening's leading expert. He is author of several books including the bestselling Creating an Australian Garden (Allen and Unwin 2010) and, with coauthor A. B. Bishop, The Australian Native Garden (Murdoch Books. 2015).Simon Leake is the founder of SESL Environment and Soil Science, a company offering soil science and horticultural testing and advice. While working across all soil-science related industries, Simon's particular interest is in urban soil science and organic waste management. He is author of Soils for Landscape Development. In 2016 The Australian Institute of Horticulture recognised him as Horticulturist of the Year.