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The Rampant Gardener

The Rampant Gardener

The Blue Spruce or Colorado Spruce (Picea pungens) is a medium-sized evergreen tree growing to 25 - 30m (82-98 ft) tall, exceptionally to 46m (151 ft) tall, and with a trunk diameter of up to 1.5 m (5 ft). It is native to western North America, from southeast Idaho and southwest Wyoming, south through Utah and Colorado to Arizona and New Mexico. It grows at high altitudes from 1800-3000 m (5900-9800 ft) altitude. It is most commonly found growing along streamsides in mountain valleys, where moisture levels in the soil are greater than the often low rainfall in the area would suggest.
The leaves are needle-like, 15-30 mm (0.6-1.2 in) long, stout, rhombic in cross-section, dull gray-green to bright glaucous blue (very variable from tree to tree in wild populations), with several lines of stomata; the tip is viciously sharp.
The cones are pendulous,thick cylindrical, 6-11 cm (2.3-4.3 in) long and 2 cm (0.78 in) broad when closed, opening to 4 cm (1.5 in) broad. They have thin, flexible scales 20-24 (0.78-0.94 in) mm long, with a wavy margin. They are yellowish to pink, maturing pale brown 5-7 months after pollination. The seeds are black, 3-4 mm (1.18-1.5 in) long, with a slender, 10-13 mm (0.3-0.5 in) long pale brown wing.
Blue Spruce does not normally hybridize with other spruces, though hybrids with Engelmann Spruce have been found very rarely.
Uses
Blue Spruce is one of the most popular garden conifers, grown for its strongly glaucous foliage. Numerous cultivars selected for particularly bright blue foliage have been selected by the horticultural trade, some of them also slow-growing dwarf forms suitable for planting in small gardens. It is also sometimes used as a Christmas tree, though the very sharp needles make it a poor choice for families with children.
Blue Spruce trees are often used by homeowners and landscape architects for home security purposes. The sharp needles of many species deter unauthorized persons from entering private properties, and may prevent break-ins if planted under windows and near drainpipes. The aesthetic characteristics of the Blue Spruce, in conjunction with its home security qualities, makes it a considerable alternative to artificial fences and walls.
Picea Pungens - Blue Spruce
Starter trees are 20 - 40 cm high
1 - 3 £3.50 each
4 - 6 £3.00 each
7+    £2.75 each

 

 

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Picea Pungens

Blue Spruce
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