^ Yep, them's stinkweeds. So far as I know, they're never intentionally planted. Their numerous airborne seeds often wedge themselves between sidewalk and building wall.
Like the folks on this forum, they just love cities.
Any arborist will tell you Garden Street is too narrow to have trees, and yet ...
Perfection as the enemy of the possible.
If it weren't for ailanthus, such streets would have no trees.