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Plant Directory

Eastern Hemlock: Tsuga canadensis

The Eastern Hemlock is a graceful, versatile and long-lived evergreen tree or shrub. There are endless cultivars of this species, including prostrate, mounded, weeping and variegated forms.  They make excellent hedge and screening plants as well as specimen plants or foundation plantings.The trees typically reach 40 - 70 ft. in height, while cultivars suitable for foundation plantings can be kept to 3 ft. or less. The natural form is gracefully pyramidal with horizontal or slightly drooping branches.


Eastern Hemlocks require care. Many require pruning to maintain their form as foundation planting or ornamentals. They are sensitive to drought, and need to have sufficient water. They are also susceptible to a number of diseases, the most threatening of which is the hemlock wooly adelgid. Despite these problems, with regular care, Eastern Hemlocks can be beautiful additions to almost any property.


Advice from the arborists at Almstead:

Depending upon their use – hedge, specimen, foundation – Eastern Hemlocks need to be consistently pruned or sheared to maintain their best forms. Hemlock wooly adelgid is a big problem in our area, but fortunately one that can be controlled with regular spraying. The beauty and versatility of these trees and shrubs makes them well worth the cost of maintaining them for most people.


Photo sources:

Top: Paul Bolstad, University of Minnesota,

Bottom: Henryhartley at the English language Wikipedia

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