Most gardens have them. Here’s one from the Borders garden.
When I asked for a piece, it’s owner looked rather doubtful, saying, ‘Well, if you really are sure….’ It must be some sort of relative of Papaver orientalis, or P. bracteata, though neither of those does much in the way of runners. This one, in a season or two, covered a square yard of garden, appeared inextricably in clumps of day lilies, grasses, rose, the works. It had to go. Fortunately, it comes into leaf early, so spot weedkilling helped. Some got dug up and replanted out in the ‘wood’, a tiny bit of waste ground out beyond the garden’s end gate. It thrives there too, and looks great flowering amongst the cow parsley. However, I must have missed a bit, and here it is, looking enchanting, amongst Geranium pratense ‘Striatum’, a Polemonium whose name I forget, and if you look carefully, another dire thug – the double form of creeping buttercup. Does anyone know what it’s proper name is?
And what are you favourite thugs? Scutellaria species? The marvellously perfumed soapworts? white fireweed?