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Picea mariana

life science Maturity 9-11 Next article →

The black spruce is a special kind of evergreen tree.

Picea mariana taiga
Picea mariana taiga

It belongs to the pine family in North America. You can find these trees in all ten Canadian provinces. They also live in all three Canadian territories. This tree is the official symbol for Newfoundland and Labrador. It is the most common tree in that province. These trees are a huge part of the taiga. The taiga is a cold forest area.

Picea mariana cones
Picea mariana cones

This tree grows in a very specific way. It is usually a small and upright tree. It grows slowly and has a straight trunk. The branches are short and hang down. The tips of the branches often turn up. The bark is thin and looks greyish brown. The leaves are dark bluish green needles. These needles are stiff and have four sides.

Picea mariana cones
Picea mariana cones

The tree makes very small cones in clusters. These cones can be dark purple or red-brown. They stay on the tree for many years.

Scientists use different names to talk about this tree. In the past, people called it Picea nigra. They also used the names Picea brevifolia or Abies mariana. The name mariana comes from Latin. It means "of the Virgin Mary."

Picea mariana cones
Picea mariana cones

This tree can also mix with other trees. It sometimes makes hybrids with red spruce. It very rarely makes hybrids with white spruce. This happens when different types grow together naturally.

Black spruce lives in many different places. In Canada, it is found in many provinces. In the United States, it grows in Alaska. It also grows near the Great Lakes. You can find it in Michigan and Minnesota.

Picea mariana taiga
Picea mariana taiga

These trees like wet, acidic soil. They often live in peatlands or swamps. In these wet areas, they grow very slowly. Their roots are shallow and spread out wide. This can make them fall over in the wind. Sometimes the ground thaws and makes them tilt. People call these "drunken trees."

Fire is a very important part of the forest. Fires often happen every 50 to 150 years.

Picea mariana taiga
Picea mariana taiga

Black spruce is a pioneer tree. This means it is one of the first to grow after a fire. It seeds very quickly after the flames go out. Eventually, other trees like balsam fir might take its place. People use the wood from these trees for many jobs. It is used to make paper pulp in Canada. It is even used to make chopsticks. Some companies use it to make strong building parts.

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File:Picea mariana cones.jpg
Picea mariana cones.jpg
File:Picea mariana taiga.jpg
Picea mariana taiga.jpg
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