Fast growing, iconic Tree Grevillea will eventually grow 15m in the Canberra region. Frost tender when young, so protect for the first few years until it develops some height and thickness to the trunk. Masses of large, golden "toothbrush" flowers smother the branches in late spring/early summer. Bird attracting and evergreen. Mix Healthy Earth Instant Clay Breaker and Martins Native Planting Mix into the soil before planting.