TIL that goldenrod is a native species in Ontario (although an aggressive spreader) and extremely popular with pollinators and insects and etc. That unattended area overrun with goldenrod? Not a bad thing, it turns out.
(The name 'Canadian goldenrod' sort of gives it away, but I didn't really know what it was and I only started suspecting it was a native when I spotted it in the Gatineau Meadowway on a recent bike ride.)