Spruce (Picea mariana (black), Picea glauca (white))

Spruce

Picea mariana (black), Picea glauca (white)

White spruce, black spruce

Based on the courses of , Master Herbalist Updated

How to identify spruce

What to check before harvesting or using it.

Botanical illustration of spruce (Picea mariana (black), Picea glauca (white))
Botanical plate

Spruce has a dense, pyramid-shaped habit.

General habit
It is bushy and compact (6 to 8 m) in areas where the climate is harshest, and tree-like and slender (20 m tall) in areas that suit it, with branches that droop more and more with age.
Stem
Black spruce and white spruce can be told apart by the colour of the central stem under the branch.
Bark
Its bark is light grey, thin and scaly.
Leaves
Its twigs, often slightly downy when young, are silvery green and matte, and bear four-sided needles 1 to 2 cm long.
Flowers
In spring, the male cone is an upright, conical catkin 10 to 20 mm long.
Fruit
The female cone is at first upright and purple, then scaly, hanging and long (4 to 5 cm). It is the one that holds the seeds.

Spruce in the garden

Sun exposure
Full sun
Soil
Acidic, cool to moist, often peaty or rich in organic matter

Sources

  • Plant profiles from the course “Wild Medicinal Plants”, eJardin Academy