After my irises bloom, their leaves begin to fall over. Do I need to trim them back or leave them?
Iris leaves typically droop as they elongate. You should only remove dead or dying leaves (if they are yellowing/browning). The only time you should trim leaves on iris is when you are transplanting them (this keeps the top heavy leaves from falling over while the plants are trying to root-in). If you cut the leaves off, you are removing their ability to continue making food for the next season's blooms.