Vaccinium.times.`Robeson` is a new and distinct pentaploid variety of blueberry plant that has the following unique combination of desirable features that are outstanding in a new variety. 1. A ripening season that bridges the gap between highbush and rabbiteye blueberry varieties. 2. Consistent yields of medium size fruit best suited for local direct marketing. 3. Very good fruit quality and good color. 4. Very vigorous plants with upright plant habit and broad soil adaptation, including higher pH soils.