Pinus sylvestris ‘Blue Ball’ is a compact, slow-growing dwarf Scots pine cultivar prized for its striking blue-green needles and dense, rounded habit. This evergreen conifer forms a naturally globular shape, making it an excellent choice for rock gardens, small landscapes, or container planting. The stiff, slightly twisted needles emerge in pairs and maintain their vibrant blue hue throughout the year, adding year-round interest. Over time, ‘Blue Ball’ develops a full, cushion-like appearance, with minimal pruning required to maintain its form.
- Size & Growth Rate: Mature Size: 2-3 feet (60-90 cm) in height and width. Growth Rate: Slow, approximately 2-4 inches (5-10 cm) per year
- Sunlight: Prefers full sun for best needle coloration and growth
- Soil: Well-draining, sandy or loamy soil; tolerates poor soils but dislikes heavy clay
- Watering: Drought-tolerant once established; water regularly during the first few years
- Pruning: Minimal pruning needed; remove dead or damaged needles as necessary
- Fertilization: Apply a balanced slow-release fertilizer in early spring if needed
- Cold Hardiness: Hardy in USDA zones 3-7; tolerates cold winters and moderate heat
- Pests & Diseases: Generally resistant to pests but may be susceptible to pine needle scale or rust diseases in humid conditions