In article ,
Charlie Pridham writes:
|
| They grow on the edges of swamps/wetlands in the wild so whether our wet
| winter will cause it I have no idea, but some sort of phytophora root
| rotting fungus does sound likely, possibly even honey fungus. ....

Yes. Our winters are particularly problematical, but I have never heard
of wisteria being unduly sensitive to wet.

There are a zillion forms of root rot, many of which haven't been
classified with any reliability! It might well be a Phytophthora or
Armillaria, but those are only two of dozens of likely possibilities.
I never identified the one in my front garden, despite it killing
virtually every woody plant grown there - and it WASN'T Armillaria,
and it WAS a fungus with (white) mycelium.

I shall have to see if my latest buddleia survives - it's not a
major problem if it doesn't, as it was one of several cuttings of a
common variety. Curiously, Chaenomeles speciosa and x superba have
always been resistant to whatever that fungus is.

Returning to the thread, the OP may equally well never discover the
cause. Mysterious root rots happen ....


Regards,
Nick Maclaren.