PPDL Picture of the Week
August 4, 2015
Lightning Damage to Trees
Mike
Mickelbart, Horticulture and Landscape Architecture, Purdue University
The photos show
an ash tree that was struck by lightning. The strike resulted in the loss of a
significant portion of the canopy and, more importantly, a significant amount
of the bark on one side of the tree. With no additional stresses, there is a
good chance that this tree may survive. The decision to keep the tree or remove
it then comes down to the age of the tree (is it young enough to easily replace
or is it a mature tree providing shade, etc) and the extent of the damage (is
the tree shape now such that it is unsightly?). If a tree survives the strike,
the biggest threat to its survival is attack by insects and disease. The bark
that normally provides a protective layer to the tree is now removed and the
tree is therefore more susceptible. The best thing to do is to be sure that
water and nutrients are not lacking so the tree can begin to heal. Do not apply
paints or other “protective” surface to the wound, as this will simply delay the
healing process.
Photos by Laura
Crawford