Ask a Question forum: Dividing German iris

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Name: Cayuga
Massachusetts (Zone 6a)
Cayuga
Aug 5, 2017 4:36 AM CST
I have a patch of Iris Germanica that has performed well for me for years. Last year the bloom was so-so; this year, nary a blossom. The sword leaves are dense, I am guessing I need to divide them. So here is my question: how do I do this? How much room do I give each fresh division? The soil is ok but the bed lies next to a hot blacktop driveway. Should I amend the soil & if so, with what?

Thanks for your help.

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