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Re: Re: TB:Tough ones

From: mmboehm@attglobal.net

Our experience with late planting, or even "on time" planting of TB's here in
Connecticut is not a matter of hardiness of the rhizomes but of varying extremes of
weather over the winter.  Freezing and thawing and more freezing and thawing so
often heave the rhizomes that come spring they are standing on tippy toe, if not
turned over with one root tenuously attached.  I often put a stone on the rhizome
to help hold it in place.
Spring rains are also a problem in a big way.  The rhizomes may be beautiful in
March and rotted by May.  It's very discouraging.  This year I'm trying the
suggestion of mulching with, as well as digging around the edges and adding, coarse
sand.  Here's hoping.
Margaret Boehm
Wilton, CT zone 6

John or Margaret Montgomery wrote:

> From: John or Margaret Montgomery <monashee@junction.net>
> Shauna _ wrote:
> > I am actively participating in a BIG test myself for TB this winter after
> > purchasing quite a few varieties from California in August. This will be
> > their first Zone 3 winter! Should be interesting come spring to see which
> > ones survive, which ones bloomed the first year and which ones bite the
> > dust. (Hopefully none actually do 'bite the dust', as I bought good quality
> > stock and have high hopes!)  :)
> >
> > Will keep you posted of my TB experiment.
> Shauna,
> With early planting I think you should have good success with TB's in zone 3.
> Six or seven years ago when we had a mail order business, I entered into an
> arrangement with the Sask. Perennial Society in Saskatoon.  I sent them 25
> different rhizomes (24 TB's and pallida variegata).  They were to plant them in
> members gardens and were not to use any heroic efforts to keep them alive.
> The report whichs which I received over the next two or three years were that
> the only one which died was pallida variegata. Every TB lived and most bloomed
> during the first spring.
> I don't have the list at hand but they were not special selections, just nice
> irises that I had extras of.  None were bleeding edge newcomers but most were
> reasonably recent intros in various colors.
> As an aside, a few years ago  I saw a huge clump of 'New Moon' growing and
> thriving in a garden near Edmonton.
> I think the key is to get them planted before the end of July so they are well
> rooted in before the cold weather arrives.  We always guaranteed our plants
> shipped to the prairies if they were ordered in time to ship in July and I
> can't remember ever being asked for a replacement.
> If I am not mistaken, in recent years there have been very heavy rains in the
> spring around Edmonton.  I expect that these rains will do more damage than the
> winter cold.  I suggest that you plant them on raised beds so they do not have
> to awim for their lives in the spring.
> Cheers
> John Montgomery
> Vernon  BC  Zone 5
> monashee@junction.net

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