Never grown Blueberry, but White Widow grows like a champion. 8 week flowering period on a very stalky plant that I recommend topping. I can get about 8-10 WW clones in my 3 x 3 1/2 flowering room that I start to flower at 12 inches. They get about 25 inches and yield anywhere from 1/2 ounce to 1 ounce of dry and cured bud.

Hope that helps....