A Warning...

Was walking past the corporate buildings down along the train track past Haymarket when I found this.

In the window of one of said buildings, they are warning you that the berries adjacent are possibly poisonous.

What was it that made them go to the trouble of buying/manufacturing an obviously custom made sign? Did someone accidentally eat the berries in passing and go into the building to phone an ambulance? Was employee struck down after a midmorning nibble at the surrounding fauna? Does the non-descript building actually house some government agency on poisonous berries?

I might have to stop in and ask next time I pass.