Picea abies

The Norway spruce, known scientifically as *Picea abies*, is a massive evergreen conifer.

This species is native to Northern, Central, and Eastern Europe. It is one of the most economically important trees in Europe today. People use its wood for many different purposes. It is also famous for being used as a Christmas tree in many countries.

This tree is a vital part of many forest ecosystems.

This tree grows very quickly when it is young. For the first 25 years, it can grow up to 1 meter every year under good conditions. As the tree gets taller, its growth rate slows down. The trunk can reach a diameter of 1 to 1.5 meters. Its leaves are dark green needles that are 12 to 14 mm long. These needles have blunt tips and a quadrangular shape. The branchlets usually hang downwards toward the ground.

The tree also produces very large seed cones. These cones are 9 to 17 cm long, which is the longest of any spruce. The cones start green or reddish and turn brown after 5 to 7 months. Inside, the black seeds have a 15 mm wing to help them spread.

Norway spruces belong to a group of plants called gymnosperms. These are plants that produce "naked" seeds. In 2013, scientists achieved a major milestone with this species. They successfully sequenced the entire genome of the Norway spruce. This was the first time a gymnosperm genome had been completely mapped. The genome is massive, containing about 20 billion base pairs. This makes it roughly six times larger than the human genome. Because the DNA contains many repetitive sequences, it is a very difficult task for computers to assemble.

The Norway spruce has a very wide natural range. In the northwest, it reaches as far as Norway. Its northern limit is in the Arctic, just north of 70° N. To the east, its range reaches the Ural Mountains in Russia. However, the exact eastern limit is hard to define. This is because it hybridizes, or breeds, with the Siberian spruce (*Picea obovata*). These two species are genetically very similar. When they breed, they create a hybrid called *Picea × fennica*. This hybrid often has hairy shoots and rounded cone scales.

There are several different types and variations of this tree. In southeast Europe, some populations have longer cones and more pointed scales. Botanists sometimes call these *Picea abies var. acuminata*. There is also a rare spruce in the Central Alps called the Alpine spruce (*Picea alpestris*). This tree has thicker, blue-green leaves and rounded scales. It is more closely related to the Siberian spruce than the Norway spruce. Many people mistake these rare trees for Norway spruce variants, but they are quite distinct.

Humans use the Norway spruce for many important things. The wood is used for making paper and softwood timber. It is also a famous source of "tonewood" for musical instruments. Makers of stringed instruments, like violins, value this wood highly. The famous maker Stradivarius used a specific form called Hazel-spruce from the Alps.

Even food is connected to this tree. In Finland, people use the young shoot tips as a spice for tea and desserts. In France, the cambium of the tree is used to wrap Mont d'Or cheese. This gives the cheese a very unique flavor.

This tree can live for a very long time. In its natural European habitat, it can live up to 300 years. There is also a famous Norway spruce clone named Old Tjikko. This clone is estimated to be 9,550 years old based on carbon dating. It grows from a single root system that produces new trees. While the individual trunks may not live that long, the genetic line is ancient. This makes the Norway spruce a fascinating link between the deep past and our modern world.