Why? Because all three of our trees holding up our wonderful tree fort are ash trees.
Hmm. What might that mean? Well, now that the dreaded emerald ash borer has made its appearance in Minnesota a couple of things could happen. That nasty little bug might kill our ash trees - a very real possibility, but not too alarming as the trees would probably not die for many years. Even after they expire, the trees should still be able to hold up a tree fort for many more years.
That's good, yes, but there is a more dire threat to our tree fort - ash borer containment. You see if, by chance, our trees get infected OR nearby trees get infected then the containment solution may be to chop down our trees. It's pretty hard to have a tree fort on three stumps :)
Molly has already pledged to chain herself to the tree, or maybe it was the tree fort, if anyone would dare to try to chop down our trees. Now that would definitely be blog-worthy!