Yes, in my experience it is good to separate the clumps and relocate in late fall early winter so they are ready for spring. I think they reproduce bulbs fairly fast.
You can find irises in temperate parts of the world. There are over 300 species.
mowed lawns and delivered papers
Some irises are moved in spring and others in fall.
That depends on where you live. I live in Tennessee and also lived in Iowa and have planted and transplanted Irises in April and also in Fall. Just don't plant when it is real hot and dry.
past participle is mowed or mown. mow mowed mowed/mown.
Mowed He mowed the lawn yesterday.
The verbs in the sentence are "mowed" and "after school."
Mowed I already mowed the yard.
I would use "irises."
Do not allow irises to become too crowded in your garden because the irises will flower poorly or not at all.
After blooming is done, you can cut back the flower stalks, but don't cut back the leaves until you are ready to separate and transplant irises in the fall. When you take them out to replant, cut the leaves down into about a 4 to 5 inch fan shape.
Vincent van Gogh painted 'Irises'