I have a Mahonia x Media 'Lionel Fortescue' in my garden. Its a young plant
and is only approx 2 feet tall at the moment. It has developed some kind of
disease on its leaves and, as I'm an inexperienced gardener, I've no idea
what it is.

Symptoms a many leaves with black patches which seem to be growing.
Leaves eventually drop off.

As I said, its only small and doesn't have too many leaves to lose!

Can anyone diagnose and suggest a cure for this?

Andrew Thomson

On Sat, 29 Mar 2003 00:58:33 -0000, Andrew Thomson wrote:

I have a Mahonia x Media 'Lionel Fortescue'...
Symptoms a many leaves with black patches which seem to be growing.
Leaves eventually drop off.

Can anyone diagnose and suggest a cure for this?

Some kind of leafspot fungus, perhaps. Sanitation is very
important for ailments of this general category. Go out and pick
up all the fallen leaves and burn them.


--
Rodger Whitlock
Victoria, British Columbia, Canada

Hang on... I'm confused.

One of you says "burn the leaves", one of you says "don't burn them".

I've picked them all up, sprays the remaining leaves with anti-fungal spray
and gathered all the fallen and diseased leaves into a plastic bag at the
moment.




"Rodger Whitlock" wrote in
message ...
On Sat, 29 Mar 2003 00:58:33 -0000, Andrew Thomson wrote:

I have a Mahonia x Media 'Lionel Fortescue'...
Symptoms a many leaves with black patches which seem to be growing.
Leaves eventually drop off.

Can anyone diagnose and suggest a cure for this?

Some kind of leafspot fungus, perhaps. Sanitation is very
important for ailments of this general category. Go out and pick
up all the fallen leaves and burn them.


--
Rodger Whitlock
Victoria, British Columbia, Canada

"Rodger Whitlock" wrote in
message ...
On Sat, 29 Mar 2003 00:58:33 -0000, Andrew Thomson wrote:

I have a Mahonia x Media 'Lionel Fortescue'...
Symptoms a many leaves with black patches which seem to be growing.
Leaves eventually drop off.

Can anyone diagnose and suggest a cure for this?

Some kind of leafspot fungus, perhaps. Sanitation is very
important for ailments of this general category. Go out and pick
up all the fallen leaves and burn them.


I'm not sure about burning, is that not likely to mobilise the infective
agent?

pk

"Andrew Thomson" wrote in message
...
Hang on... I'm confused.

One of you says "burn the leaves", one of you says "don't burn them".


Burning diseased plant material risks spreading the infection as unburnt
bits of foliage become airborne.

Incinerating at the bottom of a bonfire or a garden incinerator might work
but my preference is to remove from the garden completely tot he local
authority recycling unit which composts and sterilizes.

pk

"Paul Kelly" wrote in message ...
"Andrew Thomson" wrote in message
...
Hang on... I'm confused.

One of you says "burn the leaves", one of you says "don't burn them".


Burning diseased plant material risks spreading the infection as unburnt
bits of foliage become airborne.

Incinerating at the bottom of a bonfire or a garden incinerator might work
but my preference is to remove from the garden completely tot he local
authority recycling unit which composts and sterilizes.

pk

I would'nt buy any of that compost that household recycling units s
ell.Is the mixture sterilised or jst heated up in the heap.?Would
something like Japanese Knotweed survive......Ken

On Sun, 30 Mar 2003 15:22:41 +0000 (UTC), Paul Kelly wrote:

"Rodger Whitlock" wrote in
message ...
On Sat, 29 Mar 2003 00:58:33 -0000, Andrew Thomson wrote:

I have a Mahonia x Media 'Lionel Fortescue'...
Symptoms a many leaves with black patches which seem to be growing.
Leaves eventually drop off.

Can anyone diagnose and suggest a cure for this?

Some kind of leafspot fungus, perhaps. Sanitation is very
important for ailments of this general category. Go out and pick
up all the fallen leaves and burn them.


I'm not sure about burning, is that not likely to mobilise the infective
agent?

I was just offering "standard advice". There may -- or may not --
be something to your objection. I really don't know. Maybe Nick
McLaren can shed some light?


--
Rodger Whitlock
Victoria, British Columbia, Canada