I've noticed on a few of my apple trees that there is some blackening near
the places where I did summer pruning the year before. It doesn't look like
fire blight. Is it sap / aphid stuff? The wounds all have new shoots coming
out in great health, and aside from the black color all appears fine. Is it
mildew?
Murph
R A Murphy Jr
[NAFEX] black soot near prunings,
Richard MURPHY, 09/19/2011