[rtid]

Thanks for all the comments and advice.

I understand the reticence about growing a “weed” in the garden – I am aware of the adage that once you have had teasel you always have teasel - I am planning a wildlife garden area and they are well known for attracting birds (particularly finches) and butterflies as other posters have already noted.

I think that despite my best efforts, they may be getting too much water so I will bring them indoors and dry them out a bit.