Many plants in Australia have their seeds buried in order for the species to survive fires. The seeds start to germinate under the soil at certain temperatures. Seeds of Acacia terminalis and Dillwynia floribunda were examined in this experiment. It was hypothesised that the seeds need heat for the germination to start.Seeds of the two species were treated in hot and cold water and left to start germinating. Acacia terminalis showed a significant response in germination after the hot water treatment while Dillwynia floribunda did not. Neither seed showed a response in germination after cold water treatment. The results for Dillwynia floribunda were unexpected but may be explained by factors such as water temperature and the length of time the seeds remained in the heated water.