Maori and early European Settlers in New Zealand made a bush tea from Manuka leaves. Traditionally Maori used Manuka leaves in the form of decoctions for treating kidney, bladder and urinary problems. It was also used for fever, and head colds. The leaves were also crushed or ground for use in poultices for treating skin diseases. The earliest European adventurers used Manuka tea to help prevent scurvy during their stays in New Zealand.