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Mar 11, 2019 5:24 PM CST
Conneaut, Ohio
When is the correct time to dig and divide Irises?
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Mar 11, 2019 6:42 PM CST
Name: kathy
Michigan (Zone 4b)
near St. Clair MI
Cottage Gardener Dahlias Garden Art Heirlooms Lilies Organic Gardener
Zinnias
I've divided mine in mid to late summer with success. Gives them time to settle in before winter sets in
But, I have also taken an off shoot in Spring without a problem.
"Things won are done, joy's soul lies in the doing." Shakespeare
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Mar 12, 2019 12:27 PM CST
Name: Monty Riggles
Henry County, Virginia (Zone 7b)
Do you ever wonder if you have too
Irises Region: Virginia Keeper of Poultry Cat Lover Garden Procrastinator
I've transplanted irises in all kinds of month. Some even in January or right before bloom. The recommended time is around August when everything is going to become cooler. But I have planted as late as November and as early as January, and they seem to grow fine.

By the way, welcome to the iris forums! Welcome!
TB 'Starting Fresh' blooming for me in May of 2022. It bloomed for a week and a half with nine buds.
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Mar 12, 2019 1:51 PM CST
Name: Evelyn
Sierra foothills, Northern CA (Zone 8a)
Irises Region: Ukraine Garden Procrastinator Bee Lover Butterflies Plant and/or Seed Trader
Region: California Cat Lover Deer Bulbs Foliage Fan Annuals
Petronius ~ Welcome! to the Iris Forum! Hurray!

If I lived in Ohio I would follow the same procedure that those in your area do. I am thinking that no later than late summer, in order for them to get established before winter weather arrives, but I will let others more knowledgeable chime in.
"Luck favors the prepared mind." - Thomas Jefferson
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Mar 12, 2019 6:13 PM CST
Northern CA (Zone 9a)
Region: California Cat Lover Dog Lover Irises Enjoys or suffers hot summers
Welcome! Petronius
• “Whoever said, ‘Do something right and you won’t have to do it again’ never weeded a garden.” – Anonymous
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Mar 12, 2019 6:28 PM CST
Name: Scott
Elburn, IL (Zone 5b)
Birds Butterflies Dog Lover Canning and food preservation Region: Illinois Irises
Native Plants and Wildflowers Plant and/or Seed Trader
Welcome! Welcome to the Iris forum, Petronius! Welcome!

Here in Illinois, zone 5b, I've divided irises as early as July 4th, and try to be done by the end of August. I've read that irises need to be transplanted at least 6 weeks before frost to allow roots to develop, thus the end of August.
“In every walk with nature, one receives far more than he seeks.” --John Muir (1838-1914)
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Mar 13, 2019 5:55 PM CST
Name: Leslie
Durham, NC (Zone 8a)
Garden Photography Cat Lover Irises Region: North Carolina Peonies Enjoys or suffers hot summers
Celebrating Gardening: 2015
Welcome!

I never divide mine until after bloom time so I don't take away their energy to bloom. So, in my area, anytime between May and September. In your zone bloom probably ends later, so June to August?
"The chimera is a one time happenstance event where the plant has a senior moment and forgets what it is doing." - Paul Black
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Mar 13, 2019 6:12 PM CST
Name: Darrell
Piketon, Ohio (Zone 6b)
Irises Organic Gardener
I'm in Ohio, I divide mine in July, August, and through mid-September.
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Mar 13, 2019 8:53 PM CST
Name: Lucy
Hamilton, MA (Zone 6b)
irises
Charter ATP Member Cottage Gardener Irises Region: Northeast US Region: United Kingdom Region: United States of America
Enjoys or suffers cold winters
Welcome

The same time as just above here in Massachusetts.
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