Scott’s lifelong passion for trees is the subject of this chapter. Trees in Scotland’s folklore and mythology, as individual living species, and collectively in the environments that once were the nation’s great forests, are shown to be of paramount importance to his literary and personal writing. Articles for the Quarterly Review and other periodicals, letters to correspondents, including poet Joanna Baillie, and his unpublished personal planting journal Sylva Abbotsfordiensis are explored for their record of Scott’s nationally acknowledged expertise in silviculture, his planting programmes at Abbotsford and his experiments with growing conditions. Using a deep-time framework and recent scientific discovery, the chapter looks back to the first tree species to colonize Scotland after the last great glaciation. Scott’s planting of native species and advocacy of their value to the nation is revealed as a form of environmental reconstitution. Tensions between the aesthetics of planting and agrarian economics are investigated.