brush callistemon flora flower flowers Greece red Australia Australian bloom branches bright red bush bush plant callistemon viminalis color colorful colour colourful evergreen flower-spikes foliage full bloom leaves light native nectar plant shade shadows shrub soft stamens sunlight weeping bottlebrush wildflower bottlebrush bright fuzzy garden natural nature plants flowerhead bristly flowering madeira tree abundant appearance bright-red bush-plant callistemon-viminalis colored colors coloured colours common contrast contrasting distinctive full-bloom green shape spring sunshine weeping-bottlebrush wildflowers