I'm not sure when Flowers By Rita (also know as Flowers By Rita K) closed. It is listed in the February 1997 phonebook but not the February 2007 one, so my best guess would be the early 2000s.
I am curious as to what happened to the building (which is on the north side of Farrow just east of Fontaine). Google Streetview shows the building before whatever it was, so it must have been in the last few years. Fire is the most obvious guess, but there doesn't really seem to be any charred area around the damage..