Re: Ptilostemon chamaespence
I don't know this shrubby one but I grew the herbaceous P. acer a few
years ago. Low, small to medium, green-and-silvery thistly rosette of
no great distinction which rotted (damp) before flowering and was not
greatly missed. Ie, I'd support everything everyone else has said re
cultivation, at least (max sun, max drainage), but would be slightly
doubtful about the supposed garden virtues of any member of the genus
based on my experience of one of it (aged cynic!).
Tim Longville