Our most productive shrub is a patriot variety. You can control the diameter by pruning. We have a shrub near a side door, and I have to prune it now & then to clear the door. Its easy enough, and the shrub responds well to shaping.

Like eric said, you control the shape of the plant by pruning every season.

Blueberries start bearing very young which is why they can easily be maintained to a smaller width with pruning. Some plants sustain their juvenility if pruned to a narrow containment, but not blueberries.

Bluecrop, Berkely, Duke, Patriot, and be sure to find at least one Elliot to spread the season right into fall.

Thanks.