Linda, back at the end of August 2007, I rec'd
about 50 iris that had been greatly traumatized by being left in Customs for
over 3 weeks. Needless to say, we have since changed our methods of
ordering outside Canada, with much better success.
Optimally, I like to receive new iris around the
end of July, to give them time to settle in before our harsh
I could smell the iris before I even opened the
box. I gloved up, and gingerly opened the box to find a mostly slimey mass
of foliage and rhizomes. I carefully unpacked the box, and left the iris
to dry a bit in the sun while I prepared several containers of 10% bleach
solution. Not all of the rhizomes were hard, but I treated them all
anyway, and left them again to dry in the sun. As their names were written
on the foliage, I was unable to read most of them.
When I was about to plant them all the next
morning, I noticed my container of perennial Myke, so I gently dipped each
rhizome in a bit of water, then into this product that has mycorrhizal fungi
which is supposed to help root growth.
About half of them survived that first
winter. A few even bloomed last year, and I was able to id them. I'm
hoping more will bloom this year.
Now, I haven't tried any further experiments w the
myke product on irises, but perhaps I should.
Plus, for about the last 10 years, I've
swished every new iris, no matter where it comes from, in 10% bleach
El, near Winnipeg, Manitoba, Canada Z3
----- Original Message -----
Sent: Tuesday, April 20, 2010 7:11 AM
Subject: [iris] Re: Help: Rhizome/stalk
> Well Donald, that's discouraging to hear! But interesting
that you have
> data showing it can have different causes.
> Have you experimented to see if there is anything that can be done to
> minimize transplant effect? Other than making sure the roots
> damaged & planting right away - neither of which would help
> I wonder if soaking in
rooting hormone before planting would help...
> It's on my mind a
lot this spring - one group of purchases last year
> suffered a
lot. I was assuming it was genetics (i.e., freeze damage),
> but if
it's transplant problems, maybe there is something that could be
> Margie, I don't actually have a greenhouse and
the sunporch is already
> packed with seedling pots in the winter, so
that was more of a
> theoretical question - just wondering if anybody had
tried it. I might
> try repurchasing <one> cultivar &
keeping it on the sunporch next winter
> just to see if that solves the
problem. It's unheated, so gets cold
> enough to vernalize out
>> I have examples of the effect due to freeze damage
and from one due the transplanting effect. They look the same, but the dwindling
center fan was showing before winter on the transplant, so I don't think they
are caused by the same circumstances.
> Linda Mann
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