Grow your own fruit with the 3 gal. Blueberry 'Climax' Plant. In early spring, blueberries will be covered with white bell-shaped blooms, then will yield medium-large dark blue blueberries in late spring to early summer. Planting with other varieties of blueberries for cross-pollination will vastly increase and improve fruit production. For best results, plant this blueberry bush in a location that receives full sun to partial shade and in soil that is acidic and rich with organic matter. Annually, use a slow-release acidic fertilizer on your blueberry plants.