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RE: tectorum hardiness

In my opinion it is good growing conditions for success. Here in southern Ohio we have very little snow cover. Here at home with rich soil, lots of fertilizer and water it does great. Growing in partial shade. Started with a pot with seven fans in 2000. Photo below is 2001. I have had to dig at least half the clump every year since to control it. I have given several hundred rhizomes away.
 
At my camper 100 miles south east of me a friend has it in poor acid soil in full sun. He does not water or fertilize. It has just existed. I have it growing there in the same soil next to a pine tree. It gets some fertilizer and water. I am not there every week. It is just doing ok some increase.
 
The leaves freeze back with little green by spring. It is not mulched. Cold has not hurt it at all.
 
Mike Greenfield
Zone 5b
SW Ohio
Region 6
http://home.cinci.rr.com/irisinohio/
 


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