Irises forum→Dividing Iris

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Conneaut, Ohio
Mar 11, 2019 5:24 PM CST
When is the correct time to dig and divide Irises?
Name: kathy
Michigan (Zone 4b)
Zone 4b, near St. Clair MI
Cottage Gardener Lilies Organic Gardener Heirlooms Zinnias Dahlias
Garden Art
Mar 11, 2019 6:42 PM CST
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
Name: Monty Riggles
Henry County, Virginia (Zone 7a)
Oops. The weeds took over!
Irises Region: Virginia Keeper of Poultry Cat Lover Garden Procrastinator
Mar 12, 2019 12:27 PM CST
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!
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Name: Evelyn
Sierra foothills, Northern CA (Zone 8a)
Garden Procrastinator Irises Bee Lover Butterflies Plant and/or Seed Trader Region: California
Cat Lover Deer Bulbs Foliage Fan Annuals Seed Starter
Mar 12, 2019 1:51 PM CST
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
Northern CA (Zone 9a)
Region: California Cat Lover Irises Enjoys or suffers hot summers Dog Lover
Mar 12, 2019 6:13 PM CST
Welcome! Petronius
• “Whoever said, ‘Do something right and you won’t have to do it again’ never weeded a garden.” – Anonymous
Name: Scott
Elburn, IL (Zone 5b)
Plant and/or Seed Trader Irises Native Plants and Wildflowers Birds Butterflies Canning and food preservation
Region: Illinois Dog Lover
Mar 12, 2019 6:28 PM CST
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)
Name: Leslie
Durham, NC (Zone 8a)
Region: North Carolina Irises Cat Lover Garden Photography Enjoys or suffers hot summers Peonies
Celebrating Gardening: 2015
Mar 13, 2019 5:55 PM CST

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
Name: Darrell
Piketon, Ohio (Zone 6b)
Irises Organic Gardener
Mar 13, 2019 6:12 PM CST
I'm in Ohio, I divide mine in July, August, and through mid-September.
Name: Lucy
Hamilton, MA (Zone 6b)
Charter ATP Member Cottage Gardener Enjoys or suffers cold winters Region: United Kingdom Region: Northeast US Irises
Region: United States of America
Mar 13, 2019 8:53 PM CST

The same time as just above here in Massachusetts.

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