NC seems awfully far south to grow good blueberries...

Possibly true of the Northern Highbush (Vaccinium corymbosum) but
certainly not true of the Rabbiteye (V. ashei also known as
V. virgatum) and some others.

Most of the commercial blueberries are hybrids (of these and other
species), but will still often be divided into "southern" and
"northern" varieties.