Dear Arborist,
Recently, while visiting Mt. Tabor Park in Portland, OR, I came across some trees with needles on them. It occurred to me that I didn't know what kind of needle tree it was. Pine, Spruce, or Fir - I had no idea!
Is there any easy way to tell them apart?

Inquisitive
*********
Dear Inquisitive,
Great question!
Here's a quick guide to tell the difference between these species of soft wood trees.