Irises forum: Why wait 6 weeks after blooming to divide?

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caitlinsgarden
Jul 1, 2013 3:09 PM CST
Why can't I just start tackling the big clumps with a lot of rot starting now?
I don't plan to divide into individual rhizomes, just small clumps.
Name: Lucy
Hamilton, MA (Zone 6b)
irises
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irisarian
Jul 1, 2013 3:33 PM CST
You can scoop out the rot & apply a bleach drench. We do the time wait to allow them to go dormant.
Name: Paul
Utah (Zone 5b)
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Paul2032
Jul 1, 2013 3:55 PM CST
I had a good friend here that raised a large iris garden, over 400 cultivars, and he insisted on starting to replant right after bloom season. He replanted every year. His iris grew well, bloomed well the next year, and he donated countless rhizomes to our Utah Iris Society Sale each year so it can be done.
Paul Smith Pleasant Grove, Utah

caitlinsgarden
Jul 2, 2013 6:54 AM CST
That's encouraging. It is such a big job it feels better to spread it out. When I wait, there are often many patches left untouched for yet another year. I've done it before with certain clumps that needed emergency help and they did well.
Name: Lucy
Hamilton, MA (Zone 6b)
irises
Charter ATP Member Cottage Gardener Enjoys or suffers cold winters Region: United Kingdom Region: Northeast US Irises
Region: United States of America
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irisarian
Jul 2, 2013 11:26 AM CST
Constant off & on rain here makes it difficult to see in the garden. Listing irises for dividing for the club iris sale.

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