With terrible grammar.
"No flower is left inside after hours" is perfectly fine.
If you assume they forgot to include the word "cannabis" before "flowers" it kind of makes more sense....
You mean BUNCHA SAVAGE'S IN THIS TOWN.
They're not breaking the window for the flowers, it's to save the economy!
So where is the "in case of flower emergency" break glass? It's 3am and I forgot it was my mum's birthday tomorrow... I need emergency flowers!