A range of methods were used at Myall Park to provide successful raising and growing conditions, including the preparation of special growing beds, and experiments with soil structure and composition. The influence of Gordon's father was evident in the layout of the garden, through the practice of planting in clumps rather than lines. The garden was organised into divisions and Gordon methodically planted as much of a genus as was available together in the garden. Beyond aesthetic and environmental benefits, this planting method was also a way of encouraging natural hybridisation. The genus Grevillea had been a focus during plant collecting trips and in 1963 a new Grevillea hybrid appeared in the garden. Displaying the low growing characteristics of the Grevillea bipinnatifida, together with the vibrant flame coloured flowers of the G. banksii, and the ability to flower throughout the year and attract birds, the hybrid featured highly desirable attributes for gardeners. Gordon named the hybrid Grevillea "Robyn Gordon" after his eldest daughter (who died aged 16 from illness in 1969) and distributed it freely to nurseries in Brisbane and Sydney, without payment. Two other hybrids, named after the Gordon's other daughters, Grevillea "Sandra Gordon" (also a popular garden plant) and G.'Merinda Gordon' were also produced at Myall Park. With its appealing characteristics and adaptability, Grevillea "Robyn Gordon" became a very popular plant in Australian gardens. It was the first plant registered by the Australian Cultivar Registration Authority in 1973. In 1984 the journal "Australian Horticulture" acknowledged its impact; "Market-wise it was a winner. The public readily gave it a place in their gardens. Landscapers looked upon it as 'a gift from above' and it was planted by the tens of thousands". The Grevillea "Robyn Gordon" is the floral emblem of the Western Downs Regional Council and in 2006 was chosen as the floral emblem for the "Year of the Outback". The garden was well established by the early 1960s, with plantings maturing and self-sown species proliferating where space was available. The "grandiose scale" of Gordon's efforts to conserve and grow inland native plants had been acknowledged by the mid-1950s  and visitors became increasingly common at Myall Park. Among the visitors were influential native plant garden advocates Jean "Correa" Galbraith, Thistle Harris and landscape designer Edna Walling. In addition to visits from specialist interest groups, naturalists, botanists and scientists from institutions like the Queensland Herbarium, experts from other disciplines also conducted research at Myall Park, including world bee authority Dr Charles Michener.