My mom used to spray blossom set on our plants when we had problems with the blossoms falling off. I think it was a type of hormone. One year she sprayed too much and we had TONS of tomatoes! ;)
Wow, I wish that grape flavor worked on rabbits! They ate all my broccoli to the stems, already.
This is good to know. The guineas we have always seem to beat us to our tomatoes and peppers. Maybe this year they won't!