1 Oaks Posted on December 5, 2014December 5, 2014 by RiccartonHouse Find the row of ‘Governor George Grey Oaks’ that were planted in 1849. They have ‘Notable Tree’ Plaques attached to them. Question : How many oaks are there ? Hints They are near a wooden gate. You can see them from the front door of Riccarton house. They are close to the driveway. Posted in Activities and tagged treasure hunt.