I have not used any herbisides.
The surrounding iris didn't do it. ๐
Just that one RHIZOME. (Thank you Muddymitts) I'm in the habit of saying bulb because when I say Rhizome to most other people they don't have a clue what a rhizome is.
If I say "bulb" I don't have to explain myself but I need to knock the habit when I'm talking to the pros. ๐๐ป๐นโค๏ธ