March in pink
Above and the two below, Prunus cerasifera 'Nigra'. Contrary to what I've read in Alan Mitchell, this seems to come into flower at exactly the same time as the even more common Pissard's Plum (Prunus cerasifera 'Atropurpurea') but is instantly distinguishable, especially from a distance, because the blossom appears deep pink, in contrast to the very pale pinkywhite of Pissard's (not to mention the pure white of the species tree - see previous post).
Of course, some of the pink in these pix is artfully photo-enhanced (due to the bastard crappy camera playing up), but not as much as you might suppose.
Above and below, Prunus 'Accolade', the lower pic showing the long sprays of blossom on the end of bare branches.