I have two trees along with a tomato plant that have sprung up in the garden, I suspect birds as I cant see anything else similar. I would like to know what they are to see if I should keep them and replant somewhere or dispose of them. I am located on the Gold Coast Australia if that helps.
First two pics appear to be Murraya koenigii or Curry Tree. Produces white flowers with red then black fruits. Keys to identity are leaf shape and the fact of a compound leaf with alternate leaflets. Most compound leaves have opposite leaflets.
The third and fourth pics I think are a species of Hibiscus, although not sure of species or variety. Leaf shape, plus again alternately arranged on the twigs, plus the spotty bark.
Both could be considered valuable and interesting specimens, worthy of transplant during dormant season to a location where they have more space to grow.