Description Callistemon 'Mauve Mist' is a dense shrub that grows to a height of about 3m.It produces bottlebrush flower spikes that grow up to 7 cm long and 5 cm wide, and are pink mauve in colour. The cultivar was grown from a seedling raised from seed collected from Callistemon 'Reeve's Pink'. It was accepted for registration with Australian Cultivar Registration Authority (ACRA) in May 1978.