[metmom]

As for my older trees, I can try to weight them, but I don’t know if they will give any.

I think it's just the pulling on the branch that releases the hormones, so it may still work on the more vertical branches anyway. It's worth a shot.

[Marmolade]

I’ll give it a try. One of the trees is starting to form fruit. I copied a recipe for killing fruit flies that you hang in the tree from a bit back on the thread. I have never sprayed the trees or anything, so need to find out quick about that, as I’d like to be able to eat the fruit from the trees this year.