Is there such a thing? I have been considering an inner border for the back block, about 2 metres in from all fencelines except the one between the front and back blocks…mostly to define an area which should be whippersnippered (kind of like a firebreak) but also to provide the wrens and robins, etc (silver eyes?) with some protection from the bigger birds…
Is there a native alternative? I am very fond of lawyer vine and blackberry (?) bushes but the former is not a shrub and the latter is a declared introduced pest.