Carolina Hemlock - (Tsuga caroliniana)

An easily grown plant, it thrives best when growing in a deep well-drained soil in the western parts of Britain where it appreciates the higher rainfall. However, it succeeds in most soils and positions, being especially good on acidic sandy soils but also tolerating some lime so long as there is plenty of humus in the soil. Plants are very shade tolerant when young, but need more sunlight as they grow older. Plants are thin and poor when grown in dry or exposed places. This species is more tolerant of atmospheric pollution than T. canadensis. A slow growing tree in Britain, it requires hot humid summers. It is probably less slow in the far west and in Ireland. Trees have not done well in this country even though they are very cold-tolerant. Plants in this genus are notably resistant to honey fungus.

Inner bark - raw or dried, ground into a powder and then used as a thickening in soups etc or mixed with cereals when making bread. The leaves and twigs yield 'spruce oil', which is used commercially to flavor chewing gum, soft drinks, ice cream etc. A herbal tea is made from the young shoot tips. These tips are also an ingredient of 'spruce beer'.

Seed - it germinates better if given a short cold stratification and so is best sown in a cold frame in autumn to late winter. It can also be sown in early spring, though it might not germinate until after the next winter. If there is sufficient seed, an outdoor sowing can be made in spring. Pot-grown seedlings are best potted up into individual pots once they are large enough to handle - grow them on in a cold frame and plant them out in early summer of the following year. Trees transplant well when they are up to 80cm tall, but they are best put in their final positions when they are about 30 - 45 cm or less tall, this is usually when they are about 5 - 8 years old. Larger trees will check badly and hardly put on any growth for several years. This also badly affects root development and wind resistance.

Usually found growing singly or in small scattered groves of a few individuals on the rocky banks of streams at elevations of 750 - 1200 metres.


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