Peach Tree Bay is on the eastern shore of Berowra Creek about one kilometre upstream from the Woolwash. It is not on the 1:25000 but it is mentioned by Mick Joffe where it is said that early settlers planted peach trees there. Another explanation could be that native peach trees grew there. The native peach’s fruit is toxic but the inner bark produces a strong fibre that was used by the early settlers to make rope for their boats.
Source: Joffe, Mick 1987, Yarns and Photos: Beautiful old Berowra and Hornsby to the Hawkesbury, Sandstone Press, Berowra, p.82. Powell, John P. 1994, Placenames of the Greater Hawkesbury Region, Hawkesbury River Enterprises, Berowra, p.88.