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Re: Virus in hosta

  • Subject: Re: Virus in hosta
  • From: "M Singer" nmb@ameritech.net
  • Date: Fri, 7 Nov 2003 05:28:41 -0500

I believe that Dutch Elm disease is a fungal, not viral. The fungus growth
itself blocks the transfer of water in the plant. May be splitting hairs
here, but it seems that the only host seems to be they zylem of elms.
BUT, for those of us still growing elms, and in here in Michigan, Ash and
oak trees.  The wood, is considered 'contaminated'.  In the case of Elms,
the fungus is in the zylem, but it 'fruits/spores' on the bark which can
then be spread, ditto Oak wilt disease.  In some cases we are required to
have the wood removed immediately (cannot store and burn) to approved
disposal sites which will burn the wood to eliminated the possiblity of


----- Original Message ----- 
From: "Len Phillips" <lenphillips@yahoo.com>
To: <hosta-open@hort.net>
Sent: Thursday, November 06, 2003 7:15 PM
Subject: RE: Virus in hosta

> Hi Mike,  Dutch Elm Disease is a virus that is spread by the Elm Leaf
> Beetle.  Since the beetle only eats elm leaves and not hosta leaves, I
> don't think you have to worry.  I'm told that the sawdust is not
> considered a carrier of the virus.
> The sap on the other had is where the virus is located.  It functions by
> blocking the phloem vessels on the youngest branches causing the leaves to
> die from the lack of water.  While trees and hostas do have some similiar
> characteristics in the leaves, they do not transport fluids in the same
> manner, so it is very unlikely that your hostas would be infected.  Unless
> there was a mutation of some sort .....
> --- "Pinterics, Michael W (MED)" <Michael.Pinterics@med.ge.com> wrote:
> > I'm wondering if there is any possible issue with trasmission of Dutch
> > Elm Disease to Hosta?
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