Tsuga canadensis Carrière

Eastern hemlock (en), Pruche du canada (fr), Tsuga du Canada (fr)

Species

Gymnosperms > Pinales > Pinaceae > Tsuga

Characteristics

An evergreen tree. It grows 15-25 m tall and spreads to 6-9 m across. The trunk can be 1 m across. It is conical shape. The bark is scaly when young and becomes deeply furrowed. The leaves are dark green. They have silver lines underneath. The leaves are like needles and are slightly tapered. They are flat and have fine teeth. They are 10-20 mm long. The upper surface is shiny green and grooved. The needles are clearly arranged in two ranks. There are a few shorter ones on the upper side. The cones are oval and light brown. They are 2.5 cm long. The twigs are arranged in flat sprays and are yellowish brown. The seed cones are oval and 12-20 mm long. They are purplish-brown. They are pointed. Cones open in autumn and shed their seed later in the autumn. Cones remain on the tree into the following season.
More
Trees to 30m; trunk to 1.  diam.; crown broadly conic. Bark brownish, scaly and fissured. Twigs yellow-brown, densely pubescent. Buds ovoid, 1.5--2.5mm. Leaves (5--)15--20(--25)mm, mostly appearing 2-ranked, flattened; abaxial surface glaucous, with 2 broad, conspicuous stomatal bands, adaxial surface shiny green (yellow-green); margins minutely dentate, especially toward apex. Seed cones ovoid, 1.5--2.5 ´ 1--1.5cm; scales ovate to cuneate, 8--12 ´ 7--10mm, apex ± round, often projected outward. 2 n =24.
Tree to 30 m, the leader nodding; twigs pubescent; lvs 8–15 mm, blunt, usually minutely spinulose on the margin, twisted at the petiolar base to form flat sprays; cones thickly ellipsoid, 12–20 mm, scales persistently erect or ascending, the exposed portion of the middle ones distinctly broader than long. Moist soil, esp. on rocky ridges and hillsides; N.S. to Mich., Wis., and occasionally Minn., s. to N.J., Del., O., and Ind., and in the mts. to Ga. and Ala.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality monoecy
Pollination anemogamy
Spread -
Mature width (meter) 4.0 - 8.0
Mature height (meter) 20.0 - 22.5
Root system -
Rooting depth (meter) 0.65
Root diameter (meter) 0.5
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a temperate plant. It grows naturally on hilly or rocky woods in eastern North America. It is frost hardy. It grows on a variety of soils. It needs a cool moist site. It is very shade tolerant. It suits hardiness zones 4-9.
More
Woods and swampy areas on cool moist sites, also in upland forests, often covering the north side of ridges. Moist rocky ridges, ravines, and hillsides; at elevations from 600-1,800metres .
Light 3-7
Soil humidity 4-6
Soil texture 1-6
Soil acidity 2-6
Soil nutriment -
Hardiness (USDA) 4-8

Usage

The inner bark was baked and eaten. The young tips are used for tea. They are also added to root beer and spruce beer. The young leaves and twigs are the source of an oil used to flavour chewing gum, ice cream, soft drinks and candy. They are also mixed with maple syrup.
Uses beverage dye environmental use fiber fuel gum material medicinal oil tea wood
Edible barks leaves shoots
Therapeutic use Cold Remedy (bark), Dermatological Aid (bark), Hemostat (bark), Antirheumatic (External) (bark), Diaphoretic (bark), Febrifuge (bark), Antidiarrheal (bark), Unspecified (bark), Analgesic (bark), Gastrointestinal Aid (bark), Cough Medicine (bark), Misc. Disease Remedy (bark), Antirheumatic (Internal) (leaf), Antirheumatic (External) (leaf), Diaphoretic (leaf), Adjuvant (leaf), Cold Remedy (leaf), Antidiarrheal (root), Antirheumatic (External) (root), Herbal Steam (root), Kidney Aid (root), Urinary Aid (root), Antirheumatic (External) (unspecified), Dermatological Aid (unspecified), Disinfectant (unspecified), Gynecological Aid (unspecified), Pediatric Aid (unspecified), Unspecified (unspecified), Kidney Aid (unspecified), Antidiarrheal (unspecified), Antirheumatic (Internal) (unspecified), Blood Medicine (unspecified), Cold Remedy (unspecified), Cough Medicine (unspecified), Febrifuge (unspecified), Misc. Disease Remedy (unspecified), Orthopedic Aid (unspecified), Stimulant (unspecified), Tuberculosis Remedy (unspecified), Venereal Aid (unspecified), Herbal Steam (unspecified), Gastrointestinal Aid (unspecified), Asthma (unspecified), Catarrh (unspecified), Cough (unspecified), Antiseptic (unspecified), Cold (unspecified), Astringent (unspecified), Tonic (unspecified), Diaphoretic (unspecified), Flu (unspecified), Medicine (unspecified), Scurvy (unspecified), Sore (unspecified), Sudorific (unspecified), Swelling (unspecified), Tumor (unspecified), Vesicant (unspecified), Tea (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed. They can also be grown from cuttings of mature wood.
Mode cuttings graftings seedlings
Germination duration (days) 7 - 60
Germination temperacture (C°) 9
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Tsuga canadensis habit picture by Misty Thompson (cc-by-sa)
Tsuga canadensis habit picture by Matthew DreamsOfBunnies (cc-by-sa)
Tsuga canadensis habit picture by Christina Emery (cc-by-sa)

Leaf

Tsuga canadensis leaf picture by Misty Thompson (cc-by-sa)
Tsuga canadensis leaf picture by Melissa Melissa Keneely (cc-by-sa)
Tsuga canadensis leaf picture by Dieter Albrecht (cc-by-sa)

Fruit

Tsuga canadensis fruit picture by Misty Thompson (cc-by-sa)
Tsuga canadensis fruit picture by Dieter Albrecht (cc-by-sa)
Tsuga canadensis fruit picture by Dieter Albrecht (cc-by-sa)

Distribution

Tsuga canadensis world distribution map, present in Brazil, Canada, France, and United States of America

Conservation status

Tsuga canadensis threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:264005-1
WFO ID wfo-0000456302
COL ID 59HM6
BDTFX ID 80762
INPN ID 159899
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Tsuga canadensis f. sparsifolia Tsuga canadensis f. parvula Abies americana Abies canadensis Tsuga americana Picea canadensis Pinus pendula Pinus americana Abies curvifolia Abies pectinata Tsuga canadensis f. albospica Tsuga canadensis f. microphylla Tsuga canadensis f. jenkinsii Tsuga canadensis f. compacta Tsuga canadensis f. gracilis Tsuga canadensis f. pendula Tsuga canadensis f. sargentii Picea canadensis Tsuga canadensis var. minuta Tsuga canadensis var. sargentii Tsuga canadensis var. sparsifolia Tsuga canadensis var. pendula Tsuga canadensis var. wellesiana Tsuga canadensis var. albospica Tsuga canadensis var. jenkinsii Tsuga canadensis var. compacta Abies canadensis var. gracilis Tsuga canadensis var. sargentiana Tsuga canadensis f. minuta Pinus canadensis Tsuga canadensis