It's Fairchild gardens ?
I think that there are tanks.

m-m, not sure ;)... you mean they look so bristly, like those anti-tank hedgehogs? some broms just look like that - it's a thicket and with lots of spines too. no way to tidy it up - it's a very large planting too. under an even huger tree. these are large broms.
though in general Fairchild is quite tidy, but tidy is relative in the sub-tropics with all the rain, humidity and insects. there are lots of spider-webs too. have to go in waving arms or you'll walk right into it ;). i'll see if i can get a better pic of the planting off the camcorder to give you an idea of scale.

I like, has unusual interesting fruits, It also reminded me that anti-tank roadblock
It can be used as a hedge, to prevent the dogs run around in the garden. There is not the shadow of the high, no prevents in perspective.
I've had these augments Pandanus, every time I've been scratched.