I have posted this in 'plants' but might be one for 'problem solving' once i know the answer.
Can anyone help identify this? I perhpas should have take the picture when it was looking heathier earlier in the year but this plant is growing in two or three locations in my garden.
It is mostly growing in amongst other plants, Zebra Grass and Spiraea to name two.
I have a couple of other pictures if this one doesn't help.