As is the case for all our species of Picea,
the needles of P. glauca are sharp-pointed and stiff.
In cross-section they are four-angled and roughly as thick
as wide (not conspicuously flattened). The needles and cones
of Picea glauca both tend to be a little longer than
those of Picea mariana and the twigs are glabrous
(smooth), whereas the twigs of Picea mariana are
covered by short stiff hairs (look carefully with a hand
lens near the branch tips).
Picea glauca is a common tree found
primarily in northern Wisconsin. Unlike our other native
spruce (Picea mariana), it grows mostly in upland