Question
Do Iris have seed pods and if so what do they look like? How do they cross pollinate? I just got some Pink ones and they are all different except they all have pink on them. Could I put them all together in a bed or could I end up with the coral pink taking over the ones that are cream and pink

Answer
Hi Nokwisa,
Yes, irises do produce seed pods.  Some of the hybrids are sterile and do not but you can usually find a seed pod or two amongst your irises.  The German bearded irises I have don't seem to produce the number of pods that say a Louisiana iris or a Siberian iris does.  Yes, irises will cross-pollinate if they are within close proximity.  You can put all of your irises together in one bed.  Irises propagate more effectively via the rhizomes which is actually a stem that has been modified to grow on or below the ground with the roots coming out of it.  They will be brown or golden in color.  You will need to lift your irises once every three years and separate the rhizomes to prevent them from getting too crowded as this will diminish blooming.  I don't know that one color will crowd out another.  There are some irises that are more vigorous.  I have an iris with white tops and purple falls which multiply a lot more rapidly than the other irises I have of different colors, so I really can't tell you which color will multiply quicker.  I have not found self-seeding to be a problem except with the yellow water iris which is now considered an invasive plant in many parts of the U.S.  It is a tall, yellow iris that generally grows near or in shallow water.  It can get very invasive and take over banks and shores.  I hope this helps.
Tom