Updated map of sites where Rapid ʻŌhiʻa Death is located on the Island of Hawaiʻi. Confirmed locations illustrate initial spread of disease in Puna District of the County of Hawaiʻi in 2014. More samples confirmed that the disease was present around the eastern, western and southern areas of the Island of Hawaiʻi in 2015 and 2016. There are now confirmed cases of ROD in all districts of the island.
Ceratocystis huliohia, the less virulent of the two fungal pathogens causing Rapid ʻŌhiʻa Death, was detected on the Island of Kauaʻi in May 2018. In December 2018, Ceratocystis lukuohia was confirmed and is still only found in a limited area.
In July 2019, a single ʻōhiʻa tree was confirmed to be infected with C. huliohia on Maui. At the end of July 2019, a single ʻōhiʻa tree infected with C. huliohia was also confirmed on Oʻahu.
*While this map shows general locations for confirmed cases of Rapid ʻŌhiʻa Death, it does not necessarily indicate the pattern of disease spread over time.