[header] How to take care of irises when their flowers die [title] Understand what deadheading is. [step] Deadheading is when you remove dead flower heads from a plant. This process stops seeds from growing once the flowers have faded. 
Producing seeds takes up a plants energy that could otherwise be put towards producing new growth. [substeps] Deadheading also help to tidy up your garden and get rid of withered, faded flower petals.