Dwarf Bhutan pine A beautiful slow growing globose tree perfect for a smaller garden. Pinus wallichiana nana (also known as dwarf Himalayan white Pine) is a small tree with beautiful drooping blue foliage, and smooth grey young bark. Yields attractive long thin cones eventually. Site: Tolerates some exposureSoil: Well drained, prefers acid but lime is good tooPosition: Full sun, young plants tolerate some shadeSeason of Interest: Evergreen, Attractive blue foliage, conesHardiness: Fully hardyHeight: 6ft (1.8m) Spread: 6ft (1.8m)