Did a quick search
It's not that, I think it might be this stuff www.findmeplants.co.uk/plant-hypericum-2957.aspx
( Maximinimus you stick around I'll make it worth your while, Tue 30 Jun 2009, 13:06, archived)

That's nice too
Says it's hardy. Hack away!
( The Cat's Mother Not a People Person., Tue 30 Jun 2009, 13:28, archived)