[pingou]

Why is the maple leaf so commonly used? To mean autumn? Leaves in general? Canadians?

[reorder9695]

Presumably generally representing leaves turning brown as happena with deciduous trees in autumn?

[nxobject]

As doctors often do in clinical patient records, of course. (To be fair, the article also looks like care team-to-patient messages, so I'm sure there's some "happy fall!" messages in there.)

[akersten]

Weed

[zahlman]

I think the herb emoji is more often used to represent cannabis than falling leaves or a maple leaf are.