Genus: Spruce

Picea

Photo/Illustration: 
Jennifer Brown
Spruce (Picea)
py-SEE-ah
Pinaceae
These evergreen, coniferous trees have whorled branches and leaves that are needle-like. Female cones ripen from green or red to purple or brown. Male cones are yellow to reddish purple. Useful for screening, windbreaks, specimens.
Noteworthy characteristics:  Attractive foliage, cones, and shapes.
Care:  Moist but well-drained, deep soil, with neutral to acidic pH.
Propagation: 

Start seeds in a cold frame in spring. Graft cultivars in winter. For dwarf cultivars, take ripewood cuttings in late summer.

Problems: 

Gall insects, aphids, caterpillars, sawfly, spider mites, lesion nematodes, and scale insects are common. Some diseases may occur, including butt and heart rots, witches' broom, mistletoe, rust, and needle cast.

Species, varieties and clutivars for genus Picea

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Dwarf Serbian spruce
Picea omorika ‘Nana’
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Colorado blue spruce
Picea pungens ‘Glauca Pendula'
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Colorado blue spruce
Picea pungens ‘Procumbens’
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Dwarf Sitka spruce
Picea sitchensis 'Papoose'