Getting the Drop on Pitch Pine

Flora and Fauna Fridays

A weekly entry about the life of our estuary and watershed.
(Our apologies for the delayed publication.)

Photos and text by Erik Baard

Pitch Pine (Pinus rigida) is a hardy little tree that’s native to the eastern US and coastal from the Chesapeake Bay to Acadia National Park, Maine. They thrive in a variety of harsh conditions from poor alpine scratch to low swamps. They protect dunes, stabilize shores, and feed birds and insects. These crooked and twisted trees are rarely used for lumber, but as you can imagine, they were in great demand for the resin pitch.

Physicists are fascinated by how a drop of room temperature pitch can be shattered by a hammer blow yet is experimentally shown to be a liquid (unlike ice, which is a true crystalline solid). The hardness and consistency of pitch, which is also malleable when heated, makes it extremely useful for preserving and waterproofing ships, railroad ties, and mine shaft supports. It’s also used to flavor wine, and sometimes medicinally. Outdoor enthusiasts often use pitch for lamps and torches, glue and wound binding, or even to make natural plastic widgets! Now research labs are following suit.

These trees are very well protected against fire by their specialized bark. In a worst case scenario, even a stump can spring to life with new branches. Their cones also pop open when exposed to intense heat, so they not only endure the flames but help regenerate the ecosystem.

In our region, you can enjoy pitch pine forests in the New Jersey Pine Barrens, Fire Island, and Long Island’s East End. But NYC parks have stands of them too,  including Hunters Point South Park just blocks away from HarborLAB. We’ll grow seeds gathered there at the HarborLAB GreenLaunch!

HarborLAB makes pitch pine seedballs to benefit our entire harbor. We’ve gathered cones with students and volunteers with Baruch College, New Jersey Institute of Technology, National Iranian-American Council, and Hunters Point Parks Conservancy. We learned our seed ball making technique from Seedball NYC, and how to get seeds from pine cones (by baking them) from the Greenbelt Native Plant Center of the NYC Department of Parks and Recreation’s Natural Resources Group.

Pine seed. Photo and labeling by University of Miami: http://www.bio.miami.edu/dana/dox/altgen.html

Pine seed. Photo and labeling by University of Miami: http://www.bio.miami.edu/dana/dox/altgen.html

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