All natives, like grevilleas and bottlebrushes are best pruned immediately after the major spring flowering flush – i.e. in October/November.
Prune back by one third all over. This encourages dense growth and lots of flowers.
If a grevillea or bottlebrush is sparse, rank and ugly, prune it savagely to a height of about 1 metre from the ground. Usually the plants will regrow to look wonderful.
Prune natives soon!
Hooroo!