Black hairstreak forewings. The most conclusive way to distinguish the two is by the row of black spots accompanying the orange band which the white-letter hairstreak never has. They spend most of their lives in the canopy or in dense scrub, feeding on honeydew, and very rarely come down to ground level. Eggs are laid singly on young blackthorn "Prunus spinosa" growth and it is this stage which hibernates. Although blackthorn is the main foodplant, wild plum "Prunus domestica" and other "Prunus" spp are occasionally used. The caterpillar hatches the following spring, at the end of April, just before the buds open
Prunus 'Climax' flesh clings to the stone. The skin is dark red with yellow spots, and somewhat unpleasant in flavour, but peels away easily from the flesh when the fruit is fully ripe. Prunus 'Climax' 'Climax' is a "Prunus" cultivar, considered to be a plum. It was introduced in 1899 by plant breeder Luther Burbank. Burbank devoted a lot of work to hybridizing two plum species, the apricot plum or Simon plum "Prunus simonii" and the Japanese plum "Prunus salicina". He developed a number of cultivars from the hybrid, of which 'Climax' was particularly notable for its importance to the fruit shipping