Pyramidalis Arborvitae

Pyramidalis is a tall, narrow form of eastern arborvitae (Thuja occidentalis) with an upright pyramidal outline and evergreen foliage. The Morton Arboretum describes mature plants as about 20–30 feet tall and 5–8 feet wide, matching this plant’s captured size profile. ## Characteristics Its compact width relative to its height makes Pyramidalis useful where a vertical evergreen is preferred. The species grows best with consistent moisture and can tolerate a range of soil conditions, though drought can cause stress. ## Landscape Uses Use Pyramidalis as a specimen or in a row for screening. Site it with enough clearance for its mature height and avoid exposed locations where winter burn may be a concern. ## Maintenance Water during establishment and during prolonged dry periods. Mulch over the root zone while keeping mulch away from the trunk, and remove damaged branches as needed. [Morton Arboretum](https://mortonarb.org/plant-and-protect/trees-and-plants/eastern-arborvitae/).