By Pdb
Lancashire,
United Kingdom 
Is Sanguisorba officinalis ‘Red Thunder’ invasive. Went to RHS Bridgewater yesterday and it looks beautiful billowing in the gentle breeze but I don’t want it if it’s troublesome.
Thank you.
16 Jul, 2021
Never had any trouble with any of the Sanguisorbas,outgrowing their allotted space. Easy enough to keep in bounds in any case. They are not really deep rooted plants.
16 Jul, 2021