Pretty straggly flowers

This is the last photograph in my 'ode to green spaces' series. I have no idea what these flowers are called (suggestions please?) and should probably point out that I can take no credit whatsoever for the state of the garden; our wild and wonderful bit of green space is the work - and sometimes that means laissez faire - of our neighbour Frank.

I'll be back from London tomorrow and look forward to catching up on all your posts over the last four days.