Larry Stoter wrote:
We have a Concord (?) pear, which can produce very tasty, juicy fruit
and it is currently covered in blossom.

The last 3-4 years, as the fruit begins to ripen, wasps start eating the
fruit just at the base of the stem - fruit then rots and/or drops off.

Any suggestions for preventing the little black and yellow ^&%*?!! from
doing this.
Dunno how big it is, but can you fleece it?

Just about and that's the only possible solution I'd come up with ...

How about one of those 'fake' wasp nest thingies hung in the tree to scare
them off? THat's what Nick uses to keep the wasps away from his bees, and
it seems to work.