Arolla Pine
Pinus cembra
Few conifers hold their narrow, columnar shape as faithfully as the Swiss Stone Pine, a cool-climate tree that brings the discipline of the Alpine to the home garden.
Pinus cembra grows across the high-altitude forests of the Alps and Siberia, where its dense, uniform silhouette is as much a part of the mountain skyline as the peaks behind it. In cultivation, that same narrow columnar form makes it invaluable in gardens with limited width but a desire for vertical presence. The needles persist for three to five years, giving the tree a dense, full texture uncommon among pines, and its blue-green color holds through winter without the browning that plagues other species in cold snaps.
This is not a tree for hot, humid summers — it declines noticeably in heat and benefits greatly from sites with good air circulation. Plant it in zones 4 through 7 in well-drained soil with consistent moisture while establishing, and it will largely take care of itself. It transplants better than many pines, making siting decisions somewhat forgiving. As it matures, the tight pyramidal crown softens to a rounded, open spread that, in old age, develops a characteristic flat top reminiscent of its wild counterparts on Alpine ridgelines.
Arolla Pine
Pinus cembra
Swiss Stone Pine