Diseases of spruce (Picea spp.)
Two spruces, Norway spruce (Picea abies) and Sitka spruce (P. sitchensis) are important forest trees in Britain. Sitka spruce, a very fast-growing tree introduced from the west coast of North America, is now the most commonly planted of all our forest trees. Norway spruce, from continental Europe, is less important in the forest, but is produced in large numbers for the Christmas tree trade. On the continent it is an important forest tree, especially in mountainous areas from the Alps northwards to the north of Scandinavia. The Serbian spruce (P. omorika) a fast-growing species from Yugoslavia, has been grown experimentally by foresters, but has not become established in forest use. Many other species of Picea, particularly various cultivars of the blue spruce (P. pungens) are grown in parks and gardens.
KeywordsAlternate Host Cone Scale Ornamental Tree Spring Frost Current Shoot
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