Say Goodbye to your Tree Weeds
The gallery below is some of the most commonly encountered noxious weeds on the coast. They have very little benefit for the local environment. Unless they provide a useful purpose (Shade, Screening, Noise Barrier etc), I would recommend to remove and start again by planting something more suitable (see What Tree to Plant).
Here is a few other beauties to add to the list - they can get big, unsightly and are high maintenance. For further Weed Info and ID in the area, heres a useful link to check out - Weed Identification.