M from all botanical info I have G. juniperina is found along larger rivers of the Southern tableland, is not a local species of Mts Majura Ainslie woodlands and the photographed specimen are almost 100% garden escapes. Now this is tricky because it occurs naturally in the ACT just not in the grassy woodlands of the area. We had the discussion before...
This might be a grevillea but is not juniperina, which always has pungent (really sharp tipped) leaves. I would have expected the species that occur naturally or planted in the ACT to have narrower leaves than those in the photo.