The genus Prunusincludes around 430 species, including cherries and lots of other stone fruits, like plums, peaches and apricots. The cherry trees we tend to associate with blossom don’t also give us fruit though, they’re varieties that have been bred for centuries to give cloud-like displays of delicate flowers. The specific one we use isPrunus speciosa, the Oshima Sakura, native to Japan, though now found around the world. Depending on the location, these cherries flower between March and May, but their astonishing displays only last a week – one of the reasons they’re associated with transient beauty and mortality – in Japanese “mono no aware”, or a sense of bittersweet impermanence.