Near Eugene we stopped at a rest site so producer A could ‘shake the dew from his lily’ (he’s fancy. I just pee.). 
 
Turns out this rest stop is the home of the ‘trees from all 50 states garden’ where they take non-native species from around the continental US and plant them in one spot. 
 
I will presume the Oregon authorities made sure they weren’t messing too bad with the local ecosystem. But who knows.
 
The positive upshot of all this was a lovely little walk around a gem of a tree garden. If you are heading down I-5 near Salem OR, worth the stop.