December 12
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Plant Species of the genus Tsuga

Information about this genus
Name: Tsuga
Cultivation: CULTIVATION: Tsuga grows in humus-rich, slightly acid, neutral to marginally alkaline soil in shade to full sun. All species need moist well-drained soil, and shelter from cold winds. In poor dry soil these plants make weedy specimens. Propagate by sowing seed in containers in an area protected from winter frosts or by rooting half-hardened cuttings in late summer to autumn.
Description: There are 10 or 11 species of evergreen, monoecious, coniferous trees native to North America and Asia in this genus of the Pinaceae family. It grows in mountainous areas in its southern distribution, and in wet cool coastal areas and plains in the north. Most young trees are shade tolerant, as they naturally grow in dark forests where they make up a considerable proportion of the understory. They have flattened linear leaves with whitish silver bands on the undersides. The female cones become pendent as they ripen and drop off in the second year. Grown mainly for its timber and ornamental cultivars, it is also known for a refreshing medicinal tea made by the Native Americans in eastern Canada from the bark and twigs. The name hemlock spruce has no connection with the umbellifer of the same name, and these conifers are not poisonous.

Specie Vernacular Zone
canadensis 4?9
Tsuga caroliniana 6?9
Tsuga heterophylla 6?10
Tsuga mertensiana 4?9
Tsuga sieboldii 6?10



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