Shiva wrote:

My Peach tree, of about 8 years old, 7 feet tall, variety unknown, has
suddenly started bleeding sap from hundreds of tiny spots all over. Thne
leaves have all but dried up and fallen off, the ends of the twigs are
dead and dry too. This happened within days.
The tree is about 50' away from two others, and about 20 feet from
another peach tree, none of the others have the same problem.

It sounds like borers. Peaches are notorious for having problems with
borers. If allowed to proceed they will gridle the tree and kill it.
Now, you need to find the hole and run a wire up the hole to kill the
borer. Then to save this and your other trees you need to learn how to
do war against borers. Lindane was the standard treatment and still may
be. It is painted on the base of trees at appropriate times in the life
cycles of the borers. Your county agent can help you with the details.

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