This year I have the following plants/trees grown on my backyard:

* Asian Pears
* Banana trees
* Persimmon trees
* Some tropical vegetables

Due to lack of gardening expertise, I have been using the general
purpose fertilizer 13-13-13 for ALL of the above listed plants. I am
living in Dallas, TX area (zone 8) . Am I doing the right thing?
perhaps, can some of you experts comment on the above?

Thanks,