I’ve been reading about the beginning of baseball season and
thinking about my dad and my brother and my brother-in-law and their
relationship and love of the game. All
men, but baseball is not only for men as we know—remember “League of Their Own”
and the amazing Mo’ne Davis, the teenage female baseball sensation a couple of
years back. Anyway thinking of baseball
season, my thoughts turn to mitts, balls, and of course bats and that draws me
back to nature.
Bats, especially those used by professional players, are
usually made of white ash Fraxinus
americana, a wood known for its clean grain and strength—to get technical
white ash is called “ring-porous,” which means that for every year of growth
there are concentrations of large earlywood cells and then there is a
transition to smaller latewood cells. So
there are lower rings per inch, which makes for stronger bats. Here’s another fact—bat manufacturers put
their logo on the flat-grain face of the baseball bat and baseball players know
to hit with the logo up. That way the
baseball, if it makes contact (as it did not when I played the game), hits the
edge-grain of the white ash bat. This is
analogized to hitting the edge of a deck of cards and doing that keeps the bat
strong and intact.
Anyway all this might be moot because white ash is a
threatened species of tree. Fraxinus americana is threatened by the
insect you can see in my drawing—the emerald ash borer (EAB), Agrilus planipennis, sad to say a rather pretty insect that was
first found in the US in Michigan in 2002 probably in a shipping crate arriving from its
native Asia. Since 2002, the EAB has killed
hundred of millions of ash trees in North America. It doesn’t kill the trees by eating the
leaves although it does that; what is the killer is that its larvae feed on the
inner bark of the tree. That disrupts
the tree’s ability to transport water and nutrients. The Emerald Ash Borer website has lots of
information about what to do to prevent further damage to the white ash trees,
certainly not because of baseballs bats, but because these trees are a treasure;
their fruit is a source of nutrients for small mammals, song birds, and ground
birds. To help you recognize these beautiful trees, they have pinnately (feather-shaped) compound
leaves that are green on top and whitish underneath, hence the name. So next time, you go to a baseball game and
hear that crack of the speeding ball hitting the bat, think about white ash and
what we can do to keep it alive and thriving.