Manuka is an evergreen tree native to New Zealand. Manuka honey contains an extraordinary, naturally present, very stable and powerful unique activity not found in any other variety of honey. UMF stands for "Unique Manuka Factor", and identifies the small proportion of Manuka Honeys that contain the special unique activity affirmed. the UMF designation and rating is a highly sought after and well respected quality trademark that producers are proud to display on their label. the UMF quality trademark ranges from UMF 5+ upwards depending on UMF activity rating.