Polaris Blueberry (Vaccinium corymbosum ‘Polaris’) is a compact, highbush blueberry variety prized for its early fruiting and cold-hardiness. It forms a dense, upright shrub with deep green leaves that take on a reddish-purple hue in the fall. In spring, it produces delicate white-pink bell-shaped flowers, followed by clusters of medium-sized, firm, sweet-tart berries that ripen early in the season. The shrub maintains a tidy, bushy habit, making it suitable for smaller gardens and container growing.
- Size: Height & Spread: Typically grows 3–4 feet (0.9–1.2 m) tall with a similar spread.
- Sunlight: Full sun (6–8 hours daily) for best fruit production.
- Soil: Acidic, well-draining soil with a pH of 4.5–5.5.
- Watering: Consistent moisture; avoid waterlogging. Mulching helps retain soil moisture.
- Pruning: Annual pruning in late winter to remove old or weak branches and encourage vigorous growth.
- Fertilization: Use acidic fertilizers designed for blueberries or azaleas in early spring.
- Cold Hardiness: Hardy to USDA zones 3–7, tolerates very cold winters.