My Fatsia Japonica is sick ;(

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bonitin Gent, Belgium(Zone 8a) Aug 16, 2009

I have had this plant in my garden, (I bought when still very small), for about 15 years. It has been doing very well all these years, grew to a size of over 2.50m, but this year it looks sad, the leaves are yellowing but even more concerning are the black spots that affected some leaves, these grow in size and eventually the whole leaf dies off..
Could it be a fungal, virus or bacterial disease? I didn't notice any critters on the leaves.
Any help or advise is greatly appreciated!

Some pictures of the affected leaves..


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bonitin Gent, Belgium(Zone 8a) Aug 16, 2009

detail of the damage..

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bonitin Gent, Belgium(Zone 8a) Aug 16, 2009

another sick leaf..

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bonitin Gent, Belgium(Zone 8a) Aug 16, 2009

on the underside close-up of a black spot..

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bonitin Gent, Belgium(Zone 8a) Aug 16, 2009

It is first visible on the underside, this is how it starts..

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cgdean Pensacola, FL Mar 20, 2012

The photos of sick fatsia are exactly like mine. How do I find the
answer to what the disease is? I just joined this group and don't know how
to use it?

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trackinsand mid central, FL(Zone 9a) Mar 24, 2012

it may be water related, as in too much or too little. too much sun can play a part since this is a partial shade lover. have you ever fed this plant? it really looks nutrient deficient to me too. it is evergreen here but will drop leaves if the temps drop too far. i've also found that the older leaves do eventually drop off, leaving a more "naked on the bottom" effect. you can cut them back and they'll re-sprout and get full again.

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