Experts and BHG readers answer.
fuzzy fruit growing on bradford pear tree
The fuzzy film you describe on the pears is another symptom caused by the fireblight bacterial disease. Prune out the infected branches, cutting at least 6-12 inches back into the healthy branch. Wipe your pruning shears thoroughly with rubbing alcohol after each cut to disinfect them. Next spring before the leaves emerge, spray the branches until drippy with lime-sulfur.