Re: Re; iris heights

I am so confused about this that the Irises are diveded into classes regarding
to their height. 
Is there somewhere stated under which 'normal' conditions it is to be grown then?
Let me take an example: If I take an plant from the nordic sweden that never 
grow larger than 1 inch there, and plant it in the middle of sweden it grows to
the height of 10 or 15 inch. And the opposite ofcourse.

So when you say that IB is between 16-27 ins. and a TB is always 27 ins. or 
more: under what climatzone is that legal???


> Gunnar Andersson, Sthlm/Sw
> > 
> > Tom T. Little writes...
> > 
> > >There's always some TBs that fall in the
> > >BB height, some IBs less than 15 inches, and so on down the
> > >line. Seldom if ever do any grow taller than the registered
> > >height.
> > >
> > >So I'm wondering--what are your experiences? Are the registered
> > >heights pretty much "on the money"? a little high? a little low?
> > 
> > With very few exceptions, iris in my garden are shorter across the board
> > than their registered heights.  TBs stretch up to border size, MTBs grow to
> > IB heights, the IBs would make you proud as SDBs and so on down the line.
> > And yet, and yet... about 15 percent of all classes grow to registered
> > height or exceed it despite all. In WELL prepared, virgin soil, in the
> > second year after planting nearly all classes perform 'up to the book.'
> > >From there on it is down hill all the way.
> > 
> > Ever notice, many display and commercial gardens will 'hill up' the iris
> > beds until they are about 4 to 8 inches above the walkways? You come away
> > from that experience much dissatisfied with the 'home crowd' iris. Also, in
> > sharp contrast to backyard gardeners, display and commercial enterprises
> > grow iris in soil that is new to iris by; rotation, importation or
> > sterilization. All these methods encourage supermaximum growth.
> > 
> > Best regards,
> > 
> > Mike Lowe, Virginia, USA
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