Pit I am sorry if I was short. I have a wacky background I am book smart but also worked for many years (18, as a professional boat builder). I understand wood fairly well. Locally we have while poplar shivering poplar and rain poplar all the same tree, the local mill shreds for the pet industry. They call it white aspen, I actually don't know about your area but here everything in that family of trees is called poplar in my area. It is used with aspen back and forth. If you look at trembling aspen there are two trees typically called the same common name. Latin clarifies the issue. I believe that the toxic contents of phenol for the north american Populus family is similar and that is low so it is irrelevant.

It is not a great building wood but if people are super concerned with pine and phenols it is about the only alternative. Hardwoods have other toxic issues panel boards have formeldahydes and phenols. There is no end to it. My point is paint the wood problem solved if there is a problem to begin with personally kiln drying bakes out most of the phenol anyway unless there is a big resin pocket.