[ Like Tighnari is ever going to pass up the opportunity to talk about his favorite thing of all time. Now he turns to look at Izuku, a little surprised for the inquiry if only because it's genuine interest. ]

I can tell quite a bit. Rougher bark allows for more parasites and insects to actually get to the tree itself. Thus the bark composition needs to be more unappealing for them. It also means that it is relatively good at trapping in moisture so it can live in more arid climates.