Callistemon viminalis ‘Macarthur’ features a more compact growth habit and improved flower presentation. It has fresh-green, toned foliage with bushy and neat growth, and responds very well to pruning after flowering. Callistemon viminalis ‘Macarthur’ produces beautiful red flowers for most of the year and is resistant to myrtle rust. Callistemon viminalis is evergreen and native to the states of New South Wales, Queensland, and Western Australia in Australia. Learn more about Callistemon viminalis. Callistemon viminalis ‘Macarthur’ is a hybrid between Callistemon viminalis ‘Little John’ and Callistemon viminalis ‘Captain Cook’. Callistemon viminalis ‘Macarthur’ was developed by Ozbreed in Australia.