What evidence is there for this?

http://www.telegraph.co.uk/earth/365...ust-warns.html

Or is it the National Trust just scaremongering to get rid of plants
it dislikes?

If oaks have the disease should they not be culled?
Angus Macmillan
www.roots-of-blood.org.uk
www.killhunting.org
www.con-servation.org.uk

All truth passes through three stages:
First, it is ridiculed;
Second, it is violently opposed; and
Third, it is accepted as self-evident.
-- Arthur Schopenhauer (1788-1860)

wrote
What evidence is there for this?

http://www.telegraph.co.uk/earth/365...ust-warns.html

Or is it the National Trust just scaremongering to get rid of plants
it dislikes?

If oaks have the disease should they not be culled?

Oaks are very much a British native and Rhododendron ponticum isn't.
It does invade woodland and stops any undergrowth as light is excluded from
the ground permanently, they being evergreens. Even forest fire does not
kill them completely as they come back from the roots, seen that myself. For
that reason alone they should be removed but when you add in the fact that
they incubate/carry the dreaded disease that potentially will decimate our
oaks then IMO they must be removed ASAP.
This is one case where we can remove the invader and should.

--
Regards
Bob Hobden

On Mon, 8 Dec 2008 22:57:48 -0000, "Bob Hobden"
wrote:


wrote
What evidence is there for this?

http://www.telegraph.co.uk/earth/365...ust-warns.html

Or is it the National Trust just scaremongering to get rid of plants
it dislikes?

If oaks have the disease should they not be culled?

Oaks are very much a British native and Rhododendron ponticum isn't.
It does invade woodland and stops any undergrowth as light is excluded from
the ground permanently, they being evergreens. Even forest fire does not
kill them completely as they come back from the roots, seen that myself. For
that reason alone they should be removed but when you add in the fact that
they incubate/carry the dreaded disease that potentially will decimate our
oaks then IMO they must be removed ASAP.
This is one case where we can remove the invader and should.

But can oaks not carry the diseases as well?


Angus Macmillan
www.roots-of-blood.org.uk
www.killhunting.org
www.con-servation.org.uk

All truth passes through three stages:
First, it is ridiculed;
Second, it is violently opposed; and
Third, it is accepted as self-evident.
-- Arthur Schopenhauer (1788-1860)

wrote

, "Bob Hobden" wrote:
wrote
What evidence is there for this?

http://www.telegraph.co.uk/earth/365...ust-warns.html

Or is it the National Trust just scaremongering to get rid of plants
it dislikes?

If oaks have the disease should they not be culled?

Oaks are very much a British native and Rhododendron ponticum isn't.
It does invade woodland and stops any undergrowth as light is excluded
from
the ground permanently, they being evergreens. Even forest fire does not
kill them completely as they come back from the roots, seen that myself.
For
that reason alone they should be removed but when you add in the fact that
they incubate/carry the dreaded disease that potentially will decimate our
oaks then IMO they must be removed ASAP.
This is one case where we can remove the invader and should.

But can oaks not carry the diseases as well?

My understanding is that the disease is made worse because Rhodos are
evergreen.

--
Regards
Bob Hobden

In article ,
says...
What evidence is there for this?

http://www.telegraph.co.uk/earth/365...ust-warns.html

Or is it the National Trust just scaremongering to get rid of plants
it dislikes?

If oaks have the disease should they not be culled?
Angus Macmillan
www.roots-of-blood.org.uk
www.killhunting.org
www.con-servation.org.uk

All truth passes through three stages:
First, it is ridiculed;
Second, it is violently opposed; and
Third, it is accepted as self-evident.
-- Arthur Schopenhauer (1788-1860)

Whether you like them or not the Rhodos were originally planted to
provide cover and wind shelter in the big gardens in Cornwall and
elsewhere, unfortunately they are very successful at doing this and the
still humid atmosphere they create is ideal breeding ground of the
several species of Phytophora fungi now on the rampage and the list of
plants attacked is now above 500, Oaks in the uk are hardly effected but
it has decimated some gardens and is almost out of control. Its not just
the Rhodos being removed its all the understory planting like Laural,
bamboo and Hydrangeas, they are also raising the lower tree branches to
improve air circulation.
I fear they may already be too late and we are witnessing something that
will dwarf the effects of Dutch elm disease, it also effects perennial
plants and some moorland heathers are starting to go.
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea

On Dec 8, 10:23*pm, wrote:
What evidence is there for this?

http://www.telegraph.co.uk/earth/365...should-be-cull...

Or is it the National Trust just scaremongering to get rid of plants
it dislikes?

If oaks have the disease should they not be culled?
Angus Macmillanwww.roots-of-blood.org.ukwww.killhunting.orgwww.con-servation.org.uk

All truth passes through three stages:
First, it is ridiculed;
Second, it is violently opposed; and
Third, it is accepted as self-evident.
-- Arthur Schopenhauer (1788-1860)

Rhododendron ponticum is a disaster even with these fungal diseases.
Here is what I replied to one of your threads 2 years ago:


On a global scale, whether we worry about any of those three species

Globally absolutely but locally Rhododendron ponticum is a disaster in
Ireland.
We have bugger all in terms of unique habitat or species. One of the
few
things we have that is spectacular is the Oak woods of SW Ireland.
These
are sopping wet and do not get much frost and are loaded with (locally
restricted) mosses and liverworts and ferns. In terms of species,
very few
(in any?) are endemic but it is a spectacular habitat in beautiful
countryside and is now restricted to a few valleys having once covered
the
entire region. You also get Kerry spottted slugs and St Patricks
Cabbage
and yew and arbutus woodland.
Once rhodos move in you get zilch apart from the rhodos themselves.
It is
sad and it is right to try to control them. Sycamores are not as bad
and
deer are certainly a problem as are sheep (in some areas).
Globally it is a blip but locally it is maybe the most important
habitat in
Ireland.

In message ,
writes
What evidence is there for this?

http://www.telegraph.co.uk/earth/365...uld-be-culled-
to-save-UK-gardens-National-Trust-warns.html

Having spent many hours with a group of conservation volunteers hacking
out rhododendrons in a country park, I can answer this troll with
relish.
They produce a dead zone, and the ground takes years to recover,
according to the park wardens.

They make a great bonfire though, it's a good winter job!
--
Gordon H
Remove "invalid" to reply

On Dec 9, 3:40*pm, Janet Baraclough
wrote:
SNIP
The NTS also operates plant biosecurity measures. AIUI *the disease
spreads by spores on the wind , water droplets, or infected *leaves and
root fragments carried on human and animal *feet so you can imagine why
it hasn't been possible to contain it, *on a rainy windy site which was
walked on by hundreds of people and local wildlife. The public is now
excluded from known *infected areas but the disease is being detected in
a widening radius.

http://www.nts.org.uk/Property/13/Ne...perty/13/News/

* *The latest discovery of phytophthera kernoviae in native bilberry and
oaks in local woods *has caused great anxiety, First, that both species
are significant *in the Scottish *wildlife foodchain ; but even worse,
that pk might affect common *ericaceous plants such as native heather.

* The NTS is only the canary warning the miners of the unseen danger .
The disease must also be in other local *wild woodland and in private
gardens; the initial symptoms are not very easy for an untrained eye to
notice or identify.

* Janet. (Arran).

I feel ill reading this. I never properly recovered from Dutch Elm
disease (mental scarring; not dead limbs).

Des

In article 504df0d3-30c3-4651-8277-
,
says...
On Dec 9, 3:40*pm, Janet Baraclough
wrote:
SNIP
The NTS also operates plant biosecurity measures. AIUI *the disease
spreads by spores on the wind , water droplets, or infected *leaves and
root fragments carried on human and animal *feet so you can imagine why
it hasn't been possible to contain it, *on a rainy windy site which was
walked on by hundreds of people and local wildlife. The public is now
excluded from known *infected areas but the disease is being detected in
a widening radius.

http://www.nts.org.uk/Property/13/Ne...perty/13/News/

* *The latest discovery of phytophthera kernoviae in native bilberry and
oaks in local woods *has caused great anxiety, First, that both species
are significant *in the Scottish *wildlife foodchain ; but even worse,
that pk might affect common *ericaceous plants such as native heather..

* The NTS is only the canary warning the miners of the unseen danger ..
The disease must also be in other local *wild woodland and in private
gardens; the initial symptoms are not very easy for an untrained eye to
notice or identify.

* Janet. (Arran).

I feel ill reading this. I never properly recovered from Dutch Elm
disease (mental scarring; not dead limbs).

Des

The real problem is that although the goverment got going with the
inspections pretty soon, it does no good as especially the large private
gardens and woodland just do not have the funds to do anything much about
it, without grants for labour it is just taking too long to clear the
understory with the very small work forces that are imployed these days,
sadly there are now no water course in cornwall that do not test positive
for the spores. So if any of you reading this have woodland get clearing
now before its too late. If you can increase the flow of air and the
light levels, experiance suggests that the healthy trees seem to be able
to resist the infection
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea

In article ,
lid says...
On Wed, 10 Dec 2008 12:44:54 -0000, Charlie Pridham
wrote:

In article 504df0d3-30c3-4651-8277-
,
says...
On Dec 9, 3:40*pm, Janet Baraclough
wrote:
SNIP
The NTS also operates plant biosecurity measures. AIUI *the disease
spreads by spores on the wind , water droplets, or infected *leaves and
root fragments carried on human and animal *feet so you can imagine why
it hasn't been possible to contain it, *on a rainy windy site which was
walked on by hundreds of people and local wildlife. The public is now
excluded from known *infected areas but the disease is being detected in
a widening radius.

http://www.nts.org.uk/Property/13/Ne...perty/13/News/

* *The latest discovery of phytophthera kernoviae in native bilberry and
oaks in local woods *has caused great anxiety, First, that both species
are significant *in the Scottish *wildlife foodchain ; but even worse,
that pk might affect common *ericaceous plants such as native heather.

* The NTS is only the canary warning the miners of the unseen danger .
The disease must also be in other local *wild woodland and in private
gardens; the initial symptoms are not very easy for an untrained eye to
notice or identify.

* Janet. (Arran).

I feel ill reading this. I never properly recovered from Dutch Elm
disease (mental scarring; not dead limbs).

Des

The real problem is that although the goverment got going with the
inspections pretty soon, it does no good as especially the large private
gardens and woodland just do not have the funds to do anything much about
it, without grants for labour it is just taking too long to clear the
understory with the very small work forces that are imployed these days,
sadly there are now no water course in cornwall that do not test positive
for the spores. So if any of you reading this have woodland get clearing
now before its too late. If you can increase the flow of air and the
light levels, experiance suggests that the healthy trees seem to be able
to resist the infection

Clearing rhododendrons isn't going to do Exbury Gardens a lot of good.
http://www.exbury.co.uk/exbury/index.htm

Where the plants are as yet unaffected improvements can still be made to
the planting and if you go to some of Cornwall s big gardens you will see
daylight under the plants now as they have brought them off the ground by
removing lower branches, they are also allowed to micro prop from
infected material - clean it up, grow it on and replant later after the
area has been cleared, but right now its a huge problem.

--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea