I have tried just about everything to kill these (the only advantage to having thousands is that you have a lot to experiment with LOL). Uprooting and burning works but just burning leaves the roots. I have frozen them (left outside through the winter in CO), dried them, submerged them, chopped them up and everything in between and something always survives. I even poured bleach over one and had survivors!! BEst control I have found is to just take the pot and dump it in the trash can. The garbage man will take it away and I don't care if it takes over the land fills LOL.
Est, while you have a point it only extends to that single pot. And I currently have it in only 4 pots but I have had as many as 30. So unless they communicate like Triffids or are psychically linked and all know to hate me then I can not explain why I have never seen a flower.
Sounds like an accurate description. Except the part about flowering (for me at any rate)