From my perspective, the wasps were not a problem; it was just an observation. But it is subjective, of course.
Actually, I would have thought it easier to propagate from pieces of rhizome.
I wonder if you will notice wasps on it in future, now I've primed your observations.
I've walked past a few times now Mike and havent seen any wasps at all. Maybe your experience was a one off, or they were close by having been attracted to something else.
Just in case I'll steer clear........anyone who wants wasps and slugs in their garden is welcome to them .
Thanks for your feedback.
My observation about wasps relates to these plants in various parts of Surrey and Hampshire.
Maybe it is a time of year thing. This link suggests it may be late-season behaviour
- http://www.specialperennials.com/Gardens/wasps.htm (note also how wasps eat greenfly)
At least I am not alone:
'...I grow persicaria firetail and it soon develops into a really strong plant and spreads,... The strange thing is that the persicaria seems to attract wasps by the dozen.....has anyone else had this problem??'
'Don't know if that is peculiar to P. firetail Andrea. I've certainly never noticed it with Red dragon and, being allergic to wasp stings I think I would.'
'...no Andrea I dont get wasps attracted to my firetail.'