Prunus subhirtella 'Pendula'

'Schubert' cherry trees. Photo courtesy of

Flowering ornamental cherry trees

Judith Adam

As with all plum and cherry trees, you have to inspect the branches in spring for evidence of black knot fungus (Apiosporina morbosa). You’ll know black knot fungus when you see it — round, elongated black swellings on slim twigs and branches.