You can also use cardboard boxes as forms - putting a smaller one inside a
larger one and pouring the cement in between. I have seen some pretty good
examples in some container gardening books - YES... the wire netting is a
great idea.

Dan

"David Hill" wrote in message
...
I should think they made the shape from Pepier mache then covered with
Hypertufa, then when set hard soaked the papier mache to remove it.
If it's a large pot/planter you can incorporate some wire netting into the
hypertufa to give added strength

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk