Made for Shade - It's The Mighty Eastern Hemlock

Each month, we've been covering a Pennsylvania state symbol.
 This month we're discussing the Eastern Hemlock (Tsuga
canadensis).  Found in the cool, moist, habitats of ravines
and northern facing slopes, the tree is struggling to hold its
ground thanks to a formidable pest.  Listen in as we talk
about habitat, pests, how the tree became a state symbol, and so
much more.