Flax-leaved horseweed, according to iNaturalist’s identification engine.
Since the idea is to catalog nature, not gardens, I’ve found myself taking lots of photos of weeds. Some that I know, like dandelions, and a lot that I don’t.
Unfortunately, while observations of birds almost instantly attract other users who are ready to fine-tune the ID, people don’t seem as interested in identifying plants.
https://www.inaturalist.org/observations/26041661
On Photog.Social
On iNaturalist
Fellow iNaturalist user @sohkamyung recommended this forum thread on photo-taking recommendations by taxon
@rubah suggests tagging fediverse pictures with #plantID or #PlantIdentification.