Eastern Hemlock (Tsuga canadensis)

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Sunlight Partial shade to full sun; tolerates dense shade, with filtered morning sun preferred to avoid needle scorching

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Watering Water deeply when the top 10–15 cm of soil dries out; avoid overwatering to prevent root rot

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Temperature Hardy to -30°C; thrives in cool, humid climates and avoids prolonged temperatures above 27°C

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Leaf: Flat, short (0.6–1.2 cm) dark green needles with silvery undersides, arranged in two flattened rows
Cone: Small ovoid (1–2.5 cm long) brown mature cones hanging from slender twigs
Stem: Slender reddish-brown twigs with fine hairs when young

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Watering

Keep soil consistently moist; increase frequency during extended dry spells

Fertilization

Apply slow-release acidic fertilizer once. Use fertilizer formulated for acid-loving conifers to support healthy foliage growth

Composted coffee grounds tea：Dilute fully composted coffee grounds 1:20 with water for root drench; avoid raw grounds to prevent soil acidity spikes

Pruning

Prune in late winter to early spring to shape hedges or remove dead, damaged branches
Thin dense inner foliage to improve air circulation and reduce disease risk
Avoid heavy pruning of mature wild specimens; focus on selective trimming for cultivated plants

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no harmful effects from ingestion or contact

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Culture: Symbolizes resilience and longevity in some Eastern North American indigenous traditions

Usage: Ornamental hedge, shade tree, and erosion control for sloped landscapes