Re: tectorum hardiness

And I am in Minnesota, Zone 4 and have grown tectorum for some years. Of course our winters have been unusually mild for about five years. I had lost it once before. Perhaps it especially doesn't like spring frosts. Usually our winters are cold enough with ground frozen deep enough so they don't come up until we are safe from late frosts. There is a large bed of it at the Minnesota Landscape Arboretum.         Joan Cooper

Ken Walkup wrote:
Jim wrote:
        PS: Tectorum is proving difficult here but grew well in my city 
garden before I moved. It is quite happy at my 'dacha' one hundred 
miles south of my current suburban garden. I think I am at the razors 
edge of it's hardiness.
        
        So Jim is saying Kansas City is the northern limit of its hardiness.  I have read or heard many other opinions that tectorum is not a plant for northern gardens, but I'm in a cold zone 5, in the Finger Lakes region of NY state, and here tectorum is very happy.  It's found at every neighborhood plant exchange.  There's a mystery here about why it does well in some northern areas and not others.
        Ken



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