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Hemlock Tree Care Must-Knows
Native to dense forests from eastern Canada south to the Appalachian Mountains to Georgia and Alabama, hemlock trees thrive in part to full shade and average well-drained soil. This needled evergreen does not grow well in areas with hot and humid summers—especially where the temperature consistently exceeds 95 degrees Fahrenheit. Protect this tree from hot afternoon sun and strong drying winds by siting it in a shaded, sheltered location. Plant trees in spring or early summer and water them regularly during the first two years after planting to help them develop a strong root system. Cover the root zone with a 2-inch-thick layer of shredded bark mulch to prevent soil-moisture evaporation. Hemlock trees are sensitive to drought. Water them deeply during drought conditions and monitor year-round for drought stress (evidenced by needles that turn yellow and die). This condition makes hemlock trees susceptible to a host of other insect and disease problems. Hemlock rarely needs pruning. If necessary, shape plants lightly in spring.
More Varieties of Hemlock
Canadian hemlock
Tsuga canadensis is a stately tree to 75 feet tall with graceful green needles and small cones. Zones 4-8
‘Gentsch White’ Canadian hemlock
This variety of Tsuga canadensis is a shrub form that bears distinctly white-tipped new growth on a rounded tree that reaches 4 feet tall and wide. Zones 4-8
