North American Fruit Explorers mailing list at ibiblio

[<dwoodard@becon.org>]

In the Niagara peninsula (I think USDA zone 6), Bailey seedlings are 
preferred.

In the Windsor area of Southern Ontario, there was some interest in the 
past in Siberian C.
Tzim Pee Tao or Chui Lum Tao were I understand eventually preferred 
there from trial results, but I'm not sure what the growers have settled 
on. I have the impression that the advantage over Bailey for Sw Ontario 
conditions was not great. In British Columbia (Okanagan valley) Siberian 
C seems to be approved, but soil treatment for nematodes is recommended.

An article from 1950 based I think mostly on U. Minnesota work, 
suggested that St. Julien A was about USDA zone 5 hardiness.

I have read of prairie-hardy Western sand cherry Prunus besseyi being 
used as a rootstock for peach on well drained soil for short periods, 
and sometimes P. tomentosa, but I am not sure about long term 
compatibility and anchorage.

Snow cover and root insulation will make a difference.

Krymsk is just north of the western end of the Caucasus mountains, a 
little SW of Krasnodar which from its wikipedia article has a record low 
of about minus 27 degrees Fahrenheit.

Krymsk1 is a cross between Prunus tomentosa and P. cerasifera 
(myrobalan). See
http://www.janssen-rootstocks.nl

Doug Woodard
St. Catharines, Ontario, Canada



On Tue, 23 Sep 2014 07:57:51 -0500, mIEKAL aND <qazingulaza@gmail.com> 
wrote:
> I'm beginning to think that part of the reason I lost almost 50
> grafted peach trees last winter has as much to do with rootstock
> hardiness and the cultivars themselves.  I'm wondering if anyone 
> knows
> of a hardiness listing of peach rootstocks?  In particular Nemaguard,
> Lovell, St Julian A, Krymsk 1, Mariana 2624 and any other so-called
> hardy peach stocks.
>
> Several places are listing Lovell as a zone 7 rootstock, something I
> did not realize.
>
> ~mIEKAL