Blue oak also known as: Mountian White oak or Iron oak.
Quercus douglasii, very slow growers, drought tolerant, leaves have a blue grey tint to them. Here are a couple of my favorite from my house.
Plus a close up of leaves and bark. The green leaves behind the bark picture are a dogwood.
And now I want pictures of your Victoria Mount. Ash (eucalyptus) I've never heard of it.