Wow!

Has anyone here noticed suckering on their Persicaria polymorpha? I just read an article that stated they can sucker after several years of growing them. Persicaria filliformis, Red Flowered Asian Jumpseed is definately invasive. Persicaria virginiana and Persicaria filliformis have different flower structure compared to all the other Persicaria smartweeds. They may make up a new genus Antenoron in the future.

https://laidbackgardener.blog/2016/10/17/be-forewarned-giant-fleeceflower-can-sucker/

From your link 'Jay':

mine suddenly produced three suckers. Not spindly little things, but big well-rooted clumps. And up to 3 feet (1 m) from the mother plant

I have had our one PP for over 10 years (close to 15?) and in the spring I may see a clump a few feet away from what one might consider the "main" clump but I'm not sure what the issue is as it all grows together as the season progresses. Clearly PP is a huge plant but in my experience it isn't like I will ever see multiple distinct plants by the end of the season.

Lovely rouge. You know I am a huge fan and mine has never suckered after well over a decade. I have found the odd seedling only at the outer edges.

You know 'peren' I think I need to revise my previous post to 'Jay'. As you describe, I think I also see a seedling or two on the outer edges from year to year. I guess I don't understand what "suckered" is at it relates to this particular plant.