Duke blueberry

The Duke blueberry, also known as Vaccinium 'Duke', is a cultivar of northern highbush blueberry released in 1987. It is a tetraploid cultivar,^[1] derived mostly from Vaccinium corymbosum with a 4 percent contribution of Vaccinium angustifolium.^[2] Its parentage includes the cultivars 'Ivanhoe' and 'Earliblue'^[3]

Vaccinium corymbosum 'Duke'
Species	Vaccinium corymbosum
Cultivar	'Duke'
Breeder	USDA
Origin	Beltsville, Maryland

It has gained the Royal Horticultural Society's Award of Garden Merit.^[4]