[header] How to prune kangaroo paws [title] Cut back the plant by one third after it finishes flowering. [step] Typically, the best time to do this is at the end of summer or in early autumn, based on when your plant stops flowering. Use pruning shears or loppers to remove about one third of your plant's total mass. 
This encourages the plant to grow new buds, so it can bloom beautifully the following season. Make your cuts at a 45-degree angle to minimally damage the plant.