Picea pungens Fastigiata Narrow, columnar spruce with silver-blue foliage and intense powder-blue new growth on vertical branching. Ideal for smaller and narrow landscapes. Drought tolerant once established in a slightly acidic, moist, well-drained soil. Height: Â 6 – 7m (20 – 23 FT.) Spread: 1.5 – 2m (5 – 6 ) Zone 3