 "I. anemonifolius" is slow-growing; a 1990 field study in Brisbane Water National Park found that the lignotuber grew at a rate of 0.173 cm per existing cm of lignotuber per year, yielding a lignotuber of around in diameter at 10 years of age and 5 cm (2 in) diameter at 20 years of age.The largest lignotubers found have a diameter of 40 cm (16 in).Plants need a lignotuber of diameter to survive low intensity fires.