I was struck by this display of Wood Spurge (Euphorbia amygdaloides var. robbiae) in a flower bed in central London. The typical municipal flower bed is a drab mish mash and I've often thought that planting a spreading species around a single tree or shrub would be a better option. Formal mixed beds are fine if given a lot of attention but just look scrappy when neglected.

 So I was pleased to see an actual working example of my theory. I am reminded of the old adage: less is more.