Re: [gardeners] Magnolia Soulangeana wilting problems

Dan Dixon (
Thu, 09 May 2002 11:37:46 -0500

Sherryl Fawx at wrote:

> I suggest asking your local ag extension specialist or calling in an
> arborist.  Phytophthora and armillaria are both fungal pathogens causing
> disease.  Armillaria root rot is also known as oak root fungus or
> shoestring fungus and affects many broadleaf trees and conifers.  It
> infects and kills cambial tissue, causing major roots and the trunk near
> the ground to die.  Phytophthora kills the roots and root crown area of
> infected plants. 
> I would definitely not call them beneficial.
> -Sherryl (suspicious of "elixirs")
> Davis, Calif.

I presume my friend was naming the bad fungi, not the beneficial fungi in
the concoction his arborist uses on his trees. Just gathering info while
awaiting ag extension call. Thanks for info on the bad fungi.

Dan Dixon