Wildwood at 29 Powells Rd, Bilpin (in the Blue Mountains) is a private garden which is opening to the public from 19 Oct.  It combines formal gardens with native landscape.  There is also a gift shop and nursery.  Open from Fridays - Mondays from 10am - 4pm, during 19 Oct - 17 Dec, and again from 22 Mar - 10 June.  Entry $8, concessions available.  More information at www.wildwoodgarden.com.au