Re: SOS wisteria
- Subject: Re: SOS wisteria
- From: &* a* M* <t*@xtra.co.nz>
- Date: Tue, 5 Aug 2008 09:32:26 +1200
----- Original Message -----
From: Francisco Javier de la Mota
My guess is maybe Verticillium or some other systemic fungal infection, or
bacteria Agrobacterium tumefacens , which causes crown gall disease. I've
seen something similar to what you describe in Hedera colchica in the Madrid
area, only in summer and in watered plants. In those cases, little could be
done to save them.
My take also Francisco
As you say there is almost nothing is likely to help the dying vine. There
is the added problem that once the soil becomes infected with such a
pathogen it is likely to remain a danger for some time lurking in the soil
and it would be most unwise to attempt to replant in it. I am wondering if
anything can be done to discourage the problem from now spreading through
the soil to the healthy neighbouring vines. I have rather lost touch with
this field in recent years and perhaps there is some suitable treatment for
the infected ground which I don't now know about. Any information anybody?
My sympathy also Callie for your loss of a valued "friend"
Moira
Tony & Moira Ryan,
Wainuiomata,
Central New Zealand
One of my wisterias--Japanese, 30 years old--started to shed it's leaves at
accelerating speed last week, and now definitely looks moribund. I can't
understand it. We've had no extreme heat this summer, and it bloomed
normally last spring. It can't be old age because several other ones growing
near it are nearly twice as old. Does anyone have any ideas about what it
might be or whether anything can be done?
Cali Doxiadis
Corfu, Greece
