On Apr 21, 11:41 am, "Liz" wrote:
Hi

I bought a large (4ft) container-grown Viburnum tinus from a supplier in
Leicestershire in late February.
It seemed fairly healthy when it arrived apart from some small black-spot lesions on
the older growth.
It has been planted in semi-shade with sun all morning and again in the later
afternoon and evening and is sheltered from the prevalent south-westerly winds.
Although we are costal north Cumbria we get very little wind coming from the north to
carry any potential salt spray. The Viburnum was planted in a well-prepared hole
with FYM and blood, fish and bone. It has been regularly watered and this spring it
has been liquid fed on several occasions since planting as it has started to look
poorly. Since planting we have had frost on one or two nights and even then only mild
frost.

Over the last month or so, last year's growth has become yellowish and the black/grey
leaf lesions have spread. Some in-bud flower heads have turned brown and dropped -
others are now starting to open and look quite healthy. There is a reasonable amount
of leaf and bud drop but I can't see any characteristic stem lesions as yet.

I have contacted the nursery this morning as I was suspicious of Phytophthora ramorum
infection. Interestingly he said they had just had another shipment of Viburnum
tinus in from Italy (where I know it has been recorded) and he is investigating this
recent shipment for suspected Phytophthora ramorum infection.

I have just emailed some photos to the nursery and will send them some samples. I
have also saved some samples in the fridge in case I need to send to defra.

Maybe I'm just being a little neurotic but I have posted some images on my website
and I would be interested in comments, especially from people with experience of this
disease.

Many thanks

Liz

Images can be found at:

http://www.libtib.org.uk/viburnum/vi.../viburnum7.jpg

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Posted via a free Usenet account fromhttp://www.teranews.com

Phytopthora, so I have read, was introduced into this country via
Rhodendron and Viburnum on
imported nursery stock. The presence of Phytopthora has increased over
recent years,
the drought conditions weakens trees already susceptible to the
pathogen, giving it a stronger foothold.
Many Horse Chestnut trees, throughout the country, have suffered its
effects .
Personally, if I suspected my Viburnum had Phytopthora I would dig it
up and immediately burn it, and
(against my normal habits) disinfect (using a soap based one) the soil/
area in which it grew.Then I would
plant something that will withstand, even flourish, the changes we are
seeing in weather patterns.

Before such dramatic action, I would check a few things: the soil- is
it clay heavy,waterlogged, too dry;
did the roots dry out in transit? was it potbound? how sudden was the
onset of symptoms? etc.
I have only seen Phytopthora in trees, so I cannot help with
diagnosis. If you like your plant, investigate
the predisposing factors, then act.