Comvita UMF 18+ Manuka Honey is produced in New Zealand and contains unique plant phenols naturally present at varying levels in honey made from the nectar of the Manuka bush (Leptospermum scoparium), native to New Zealand. Manuka Honey is gaining worldwide recognition for its unique properties. New Zealand UMF Grade Manuka Honey is highly regarded and its reputation continues to grow. You can enjoy the confidence of purchasing premium quality Manuka Honey backed by the UMF guarantee. Comvita is the world's largest manufacturer of premium quality UMF Manuka Honey. Comvita UMF 18+ Manuka Honey is guaranteed to be at least UMF 18. The UMF grading system appraises natural markers found in Manuka honey, and assures purity & quality.