Genus: Hemlock

Tsuga

Photo/Illustration: 
Michelle Gervais
Hemlock (Tsuga)
SOO-gah
Pinaceae
Most Tsuga species are native to forests of Southeast Asia and North America. They have short, flat needles with white bands of stomata on the undersides. They make excellent specimens in natural or formal settings alike, for example, planted in the lawn or a wooded site. Many species are suitable for hedging and screening, and dwarf varieties do well in rock gardens or mixed borders. Hemlocks can tolerate a considerable amount of shade, particularly when young. They are notably at risk of infestation by woolly adelgids, scale, and mites.
Noteworthy characteristics:  These small-needled conifers are the aristocrats of evergreens, and have a wide variety of uses in the landscape.
Care:  Grow in moist, but well-drained (acidic to slightly alkaline) soil in full sun to full shade. Prune hedges in late summer or early fall.
Propagation: 

Sow seed in a cold frame in spring; root semi-ripe cuttings in late summer or early fall.

Problems: 

Botrytis (gray mold), rust, needle blights, butt rot, snow blight, weevils, mites, aphids, woolly adelgid, scale.

Species, varieties and clutivars for genus Tsuga

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Golden Duchess™ Eastern Hemlock
Tsuga canadensis 'MonKinn'
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Canada hemlock
Tsuga canadensis
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Sargent's weeping hemlock
Tsuga canadensis 'Pendula'