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Characteristics Ornamental Shrubs and Trees Colorado Blue Spruce. Plant height (cm) higher 200 cm. Foliage colour light blue, silvery. Growth rate medium growing. Shelter in winter shelter is not required. Landscape use group planting, specimen. Water needs moderate. Light needs semi-shade, full sun. Cold hardiness zone 3 (-40 to -34°c), 4 (-34 to -29°c), 5 (-29 to -23°c), 6 (-23 to -18°c), 7 (-18 to -12°c), 8 (-12 to -7°c). Not poisonous plant. Frost resistance. Neutral soil. Sandy loam soil, loamy soil.