Lots of people have never seen this. A "snake" plant/"motherinlaw tongue" plant blooming. I don't know it's correct name but those are the two common names I've heard it called. Mine never bloomed before I moved into this house and it has bloomed every summer since. OH - this was my Granny's plant. She died in 1981. I have no clue how long she had it before then.
9 months ago