Fire Blight
Ooze
Canker
Fire blight is a serious bacterial disease of crabapples, hawthorn, mountain ash, and pear.
Symptoms appear as infected twigs, leaves, and flowers turn dark brown to black. The dead twigs will look as if they were burnt by fire (hence the name) and may curl into a “shepherd's crook.”
A close look at the bark may reveal “bacterial ooze” which is a sign of the disease having spread throughout the tree.
This usually occurs in the wet months of the year.