Geranium magnificum

That's its name, not my description of it! Though I am very, very fond of it. It likes our garden and grows really well here. I guess I bought one plant about 10 years ago, and I've split it so many times that it's everywhere I look. 

Perhaps there's too much of it? But it's so good at smothering those pesky weeds, even the nettles and the creeping buttercup struggle to penetrate its luxuriant foliage. 

And I do love blue flowers.