Macadamia NutsAboriginal people had been eating the native macadamia nuts for thousands of years, but they were not eaten by white settlers until the 1850s. The first commercial orchard was planted at Rous Hill, near Lismore, by Charles Staff in the early1880s.  However, nut cracking machinery was not imported until the 1940s. Meanwhile, an industry had become established in Hawaii with seedlings from Australia. Macadamia nuts are now a $100 million industry in Australia.