In article , "O.B."
wrote:

This is a long shot but it may be part of the problem. It sounds like
one tree is badly diseased. It may be better to remove it to prevent
the spread of the disease. The others may be a variety that is poorly
suited to your climate. The tree may require more or fewer hours of
chilling.

The trees should not require fertililzer. The trees normally benefit
from robust pruning. The trees are a size that should produce heavily.
A happy tree will set so many fruit that thinning is required to remove
80% of the fruit set. The proximity to the peach tree should have no
effect.

I would start over with new trees from a local nursery so that it is
well suited to your area. You need not remove all of your present trees
to start a new one.

Dick


les. One tree's leaves wilted and many
of the branches turned black. Thinking it was a disease, I cut off all
the bad limbs. The other two trees grew fine but produced no fruit.

A family member suggested that we prune the trees in the following
winter. So in Spring 2003, we pruned the trees pretty hard.
Unfortunately, we had a late freeze in May and it killed many of the
blossoms (including those on a neighboring peach tree). So the trees
just put on new growth for the entire year, but no fruit.

This year, each tree had only ONE cluster of blossoms. Nothing came of
the two trees. The 3rd (the formerly diseased tree) tree started to put
on fruit and then they withered and died. So again, we are without
fruit. One tree is about 9 feet wide and about 10 feet tall, another is
5 feet wide and 11 feet tall, and the other "diseased" tree is about 2
feet wide and 7 feet tall.