Holly problem

[Graham]

on the walnut; Marssonina juglandis.

[Graham]

Walnut Leaf Blotch

Also known as 'Walnut anthracnose' and formally as 'Gnomonia leptostyla', 'Marssonina juglandis' or 'Marssoniella juglandis'.

 

A widespread fungus causing brown blotches on young fruits and leaves, when severe will cause the nuts to abcise (fall prematurely) after turning black and considerable leaf fall.

 

Another disease which favours wet weather for infection, it usually appears in late May and early June and will overwinter on leaf litter.

 

Fallen leaves should be cleared and burnt or properly composted. Again, Bordeaux mixture may help a serious infection.

 

Cut and pasted.

[Dean Lofthouse]

Cheers Graham

[nepia]

Any more ideas out there re the holly thing? I was in a garden in West Wickham (S.E.London/Kent) this afternoon and there was a ?40-year old native holly suffering; thin foliage again - you shouldn't be able to see through it. But 10 feet away was a dark green garden species/hybrid completely unaffected, as was a green/yellow variegated plant 20 yards away.

So perhaps whatever is doing the dirty is specific to I.aquifolium in its pure form only.

[Dean Lofthouse]

I think all types are affected on the site I'm on, variegated and common. One plant badly affected 10ft away not affected??