Garden Scheme
Plant library · Conifers & Evergreens
Calocedrus decurrens
Incense cedar is a tall, aromatic evergreen conifer with dense foliage and cinnamon-toned bark. At about 50 feet tall and 15 feet wide, it creates a strong vertical presence rather than a low, spreading canopy. Its year-round foliage suits plans that need a lasting screen or a single structural tree, especially where a narrow upright silhouette is more useful than broad shade.
Space Incense Cedar 15 ft apart, measured center to center (4.6 m).
The mature spread is about 15 ft (4.6 m), so neighboring plants just meet at maturity without crowding.
Treat 15 ft as a planning baseline — cultivar and local growing conditions shift the final footprint.
Give incense cedar a permanent position at the outer edge of a large bed, along a property boundary, or as a specimen with clear views of its trunk and lower branching. Its evergreen mass can define the back of a garden throughout the year. Keep it away from low sun-loving planting areas that would fall within its future shade, and leave a service route or open lawn strip beside the trunk for access as the tree enlarges.[1][2]
Space multiple trees 15 feet apart, center to center, for a continuous row with room for each mature crown. A 15-foot mature width means the planting line should also stand well back from fences, buildings, and paths; reserve at least half that width from the trunk to a fixed edge where possible. Do not treat a young, narrow plant as its finished footprint when laying out beds beneath or beside it.
Use a full-sun site with well-drained soil. Low-water planning is most appropriate after the tree has established; young trees benefit from deep, infrequent watering while their roots develop. Avoid assigning this tree to a tightly irrigated perennial border if its watering pattern will differ from the surrounding plants, and keep the root zone open rather than crowded with intensive planting.[1][2]
The dark green foliage holds through winter, so the tree continues to occupy visual space and cast shade when deciduous planting is bare. Flaking, furrowed bark becomes a stronger feature as the tree matures. Small cones add late-season detail and may remain on the tree into winter, making this a useful backdrop for beds that need off-season structure.[1][2]
Choose the initial site carefully, because incense cedar is difficult to transplant once established. In areas where pear rust is a concern, avoid placing it close to pear trees: incense cedar can serve as an alternate host in the disease cycle. This is a long-lived tree with a large mature presence, not a temporary filler for a narrow side bed.[1][3]