Manuka flowers only open for a few short weeks of the year, and if conditions are just right, bees are able to harvest the nectar to make honey. 27+ UMF is one of the highest grades of Manuka honey, and limited amounts are available annually. Steens have developed their unique WholeComb extraction method to ensure […] Manuka flowers only open for a few short weeks of the year, and if conditions are just right, bees are able to harvest the nectar to make honey. 27+ UMF is one of the highest grades of Manuka honey, and limited amounts are available annually. Steens have developed their unique WholeComb extraction method to ensure Packaging Of The World