Blueberry plant named ‘BB05-274MI-139’

A new and distinct cultivar of blueberry plant named ‘BB05-274MI-139’ as described and shown herein. ‘BB05-274MI-139’ is a new and distinct high chill tetraploid Northern highbush blueberry ( Vaccinium ) variety of ancestry based largely on V. corymbosum with a limited number of genes from V. angustifolium . It is a productive late season ripening variety that ripens approximately at the same time as Elliott, and 25 days after Bluecrop. ‘BB05-274MI-139’ provides a very good yield potential, very good plant vigor, fruit quality and firmness, as well as characteristics suitable to mechanical harvesting, and very good flavor and texture.