Hello, I'm new here and have this question.

We have two young fruit trees which are plagued with green fly.

The ants love and look after them by harvesting their sweet residue and they also scare off any preditors like spiders, grubs, etc etc..

Is it better to have the green fly or the grubs?

Grubs eat the young leaves whereas green fly dont actually kill the leaves they just take their fill of sap. If we keep the ants away then surely we will have grubs and green fly as opposed to just the green fly.

Cheers