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nafex - Re: [NAFEX] Butternut/White Walnut - disease issues.

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  • From: Matt Demmon <>
  • To: North American Fruit Explorers <>
  • Subject: Re: [NAFEX] Butternut/White Walnut - disease issues.
  • Date: Sun, 1 May 2011 07:06:22 -0400

Steve, at least here in Michigan, the experts have been saying that there
are pretty much no resistant butternuts. All the 'butternuts' that they've
found that are surviving are actually hybrids with Japanese walnut
(heartnut). Some hybrids look indistinguishable, at least to me, from
butternut. But all of the straight species is being wiped out here.

z5 se MI

On Sat, Apr 30, 2011 at 10:22 PM, Steven Covacci <>wrote:

> Group:
> I bought a vigorous butternut/white walnut seedling today. I just read up
> on the disease susceptibility in white walnut. There is a 300+ historic
> white walnut that near me. It looks in good shape, although has a large
> cavity in it's trunk at the base, but still doing well. Does this mean that
> this is a tree of unusual disease-resistance?
> Should I graft a disease-resistant scion/cultivar unto it?
> Are there disease-resistant clones?
> Thanks,
> Steve NJ 7a
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