The Japanese have cherry blossom festivals. Who can blame them? The pink or white blossom against a blue sky is always an uplifting sight. It tends not to last long. April showers and spring breezes soon dash the petals to the ground, like confetti. I saw a car the other day that had clearly been parked under a blossom tree when it rained. It was covered completely in pink petals, apart from a space on the windscreen that the wipers had cleared. It whizzed past too fast for me to photograph but it actually looked astonishingly pretty, like a carnival float.