A hardy conifer, which thrives in mountainous and tundra conditions. One individual in Sweden, nicknamed ‘Old Tjikko’, is thought to be one of the world’s oldest living organisms (more than 9,500 years old).

Native across much of continental Europe, dominating boreal forests from Russia east of the Urals into Finland, Sweden and Norway, and south through the Alps and Carpathians; it also thrives in lowland Denmark, Poland, Germany and France. In Britain and Ireland it is usually planted on lowland sites unsuited to more productive conifers.

Monoecious, small cream-coloured male cones producing copious pollen in spring, on the same tree as female cones. When mature, elegant long female cones release seed, though often infertile in milder regions of north-west Europe.

Usually tall (to 50m) and spire-shaped, rounder when old. Needles sharp, green, slightly curved and square in cross-section, so rollable between finger and thumb. Bark scaly, cracked, red-brown. Cones hang down, to 20cm, with papery scales. Sitka Spruce differs: bark lacks the red hue, needles straight and diamond-sectioned (not rollable), cones shorter.

Prefers moist, well-drained soil but tolerates brief waterlogging; intolerant of salt coastal winds, unlike Sitka Spruce. Its extensive roots make it moderately windfirm and useful in windbreaks, especially in mixtures. It tolerates light shade, biding time until a canopy gap appears. Slow at first, then vigorous. Low fertility limits regeneration in milder regions.

Provides year-round shelter for wildlife. Its seeds are a favourite of Red Squirrel (Sciurus vulgaris), and several moth larvae eat the foliage. In dense monoculture plantations, needle-drop can acidify soils and watercourses, harming other species, especially fish.

Given extensive lowland planting at its natural limit, it is thought vulnerable to a warming climate, chiefly through drought intolerance. Like most spruces it is prone to root rot and honey fungus. The Eight-toothed Spruce Bark Beetle (Ips typographus) targets stressed trees and has devastated European forests; a few of the beetles are blown into Britain yearly, with none yet reported in Ireland.

Economically the most important timber in mainland Europe, though secondary to Sitka Spruce here. Its valuable, long-fibred timber suits paper, and its strength-to-weight ratio suits construction, but it is non-durable, so unsuitable outdoors. It is the preferred ‘tonewood’ for violins and cellos. It was the original Christmas tree, a sixteenth-century German tradition, though better needle-retaining species are now usually preferred.