Spruce trees are evergreen coniferous trees that grow in pyramid-like shapes. They are evergreen because their leaves remain ...

Spruce trees that experienced long-term droughts were more resistant to future ones, while pines acclimatized to wet periods were more vulnerable.

Maine tree spraying will kill any caterpillars, not just forest pest While not toxic to people or most animals, pesticides to protect spruce and fir trees against budworm could also hurt the ...

It feeds on and kills balsam fir and spruce trees. It primarily feeds on the new needles of balsam fir (Abies balsamea) and white spruce (Picea glauca). When populations are high enough, the spruce ...