Violets are blue
Cyanosis follows severe haemorrhaging
And no amount of sugar will save you
The question is: Are they actually dead at that point? What constitutes death for a plant? It's not lack of brain activity.
Warning: Go too far down this road and you realize that the #potatoes that will happily begin growing shoots if you leave them in the sack for too long are alive and screaming when you drop them into boiling water.
https://doi.org/10.1093/oso/9780190687724.003.0010
After all, part of the point of #cooking is to kill otherwise still-alive organisms before eating.
At this point, I recommend a short story by #RoaldDahl titled "The Sound Machine". It's collected in More Tales Of The Unexpected, amongst other places.
The story was published in 1949. Botanical science finally caught up with fiction in 2023.