when to separate iris's

I live in Phila, PA area. When do I dig up and separate my iris's? Could someone please direct me to a site on the web that gives instructions for how to do this. Thanks.
John Clarke
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John, I do it anytime after they quit blooming. The earlier you do it, the better chance you have of getting blooms the following summer, otherwise I have found that it takes mine two years.
One trick I have tried and found that it works, is to take the shovel blade and put it in the center of the clump of risones, and cut it in half. I leave half undisturbed and take out the other half and separate it. That way I still get blooms the following year.
Dwayne

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jc wrote:

If they're bearded iris, do it when fresh rhizomes are in stock at your local nurseries. The time to divide them is the same as the time to plant new iris.
--
David E. Ross
Climate: California Mediterranean
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