Re: Re: Over wintering of potted Sibs

From: dlouis@dynamicro.on.ca

On Sun, 19 Sep 1999, Leroy Kriese wrote:

> From: "Leroy Kriese" <ambrosia@silk.net>
> 
> I have done this frequently over the years in zone 5 and zone 2 (when I was
> in Alberta).
> 
> When I just neglected them - left them uncovered (nonconsistant snowcover as
> well) and let them dry out after they went dormant they come through at a
> much higher rate of success. I think that siberians once they go dormant in
> a pot they don't like wet feet. One of these plants that they say are
> susceptable to winter drowning? More suscepatable to drowning than freezing.
> Most temparate zone plants can take very low root temparatures. some
> Siberians don't overwinter very well at all, sino-sibs seem to rot out in
> pots over winter.
> 
> The mix I use is a commercial recipe that we mix at the nursery, the recipe
> comes right out of the provincial nursery guide. Consists of peat, sawdust
> (we use hog fuel), sharp sand, nutricote, dolomite lime, gypsum,
> micro-nutrients, tri-phosphate, (double is better). Sawdust is just a cheap
> inert filler. Sharp sand is the key, found that increasing it makes
> healthier plants but tired arms.
>  Leroy Kriese Zone 5   Vernon, BC

Leroy, What do you think about trying to overwinter potted sibs starting
in October (about the 10th)? I'm in zone 4/5. The soil is already 60oF
which may mean they won't survive.

My husband is going to be in Boston October 5th-10th and I would like to
get a couple of sibs from Marty and Jan but won't if they won't survive
the winter outside. The difficulty is that I don't want to pay for the
phytosanitary certificate, Otherwise I would ask them to send something
next spring. It is also very, very dry inside over the winter so I can't
have them inside either. Thanks for any help.

-- 
Diana Louis <dlouis@dynamicro.on.ca> 
Zone 4/5 Newmarket, Ontario, Canada 
AIS, CIS, SIGNA, iris-talk, Canadian Wildflower Soc.

URL for the North American Native Irises web page
http://molly.hsc.unt.edu/~rbarton/Iris/NANI.html


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