Again we are discussing the merits and the wherefore of collecting. The best thing you guys can do is move West.
Where you can get a scientific licence to dig from the Dept C.A.L.M. Conservation and Land Management $ 10--00 per year.
Now don't all rush we have a rental housing shortage

Pup
Now even though we can get these, there are restrictions that come with them.
Another interesting point is that even though it is a noxious weed or tree if it is in a National park ( here in WA ) if you dig it without permission.
The fines are up to $ 50,000 so if you want to take the chance go for it.
I do have one.
Pup