Mystery self-set shrub

Mystery self-set shrub

Observation - Mystery self-set shrub - UK and Ireland. Description: I'm sure I should recognise this - I think it's a garden plant that I know. We haven't pulled it up because we want to know what it is - but neither of us can recognise it yet. It has self-set in a gravel path in our garden. The stems are thick, pale gr

I'm sure I should recognise this - I think it's a garden plant that I know. We haven't pulled it up because we want to know what it is - but neither of us can recognise it yet. It has self-set in a gravel path in our garden. The stems are thick, pale green with a bloom on them.