Fagus problem

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Fagus problem

Post  my nellie on Thu Aug 26, 2010 9:51 am

I would like to ask a question concerning the health of the little fagus I posted over on the Questions forum.
Well, some leaves have developed a discoloration, patches in greyish colour i.e. And also they grow a "papery" feel and become crisp and frizzy at their perimeter.
As far as I can tell these spots do not look like powdery mildew..., at least I cannot identify that "dusty" surface of the mildew.
Is it because of the presence of some pests?
Lately due to high temperatures my bonsais are fine sprayed some times daily. The same apply to the fagus.
But I have read that high humidity and temperature are beneficial factors for the powdery mildew formation, so....
I have some insecticides at home from previous use (spider mites etc). Is it recommended to use any of them?

And by the way, I would like to push my previous question, too.
my nellie wrote: .... ... ....
Question: If I repot hopefully next Spring (following the styling that Jim quoted), should I keep the sacrifice branch for one more year?

my nellie
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Re: Fagus problem

Post  Billy M. Rhodes on Thu Aug 26, 2010 1:33 pm

my nellie wrote:I would like to ask a question concerning the health of the little fagus...
Well, some leaves have developed a discoloration, patches in greyish colour i.e. And also they grow a "papery" feel and become crisp and frizzy at their perimeter.
As far as I can tell these spots do not look like powdery mildew..., at least I cannot identify that "dusty" surface of the mildew.
Is it because of the presence of some pests?
Lately due to high temperatures my bonsais are fine sprayed some times daily. The same apply to the fagus.
But I have read that high humidity and temperature are beneficial factors for the powdery mildew formation, so....
I have some insecticides at home from previous use (spider mites etc). Is it recommended to use any of them?

And by the way, I would like to push my previous question, too.
my nellie wrote: .... ... ....
Question: If I repot hopefully next Spring (following the styling that Jim quoted), should I keep the sacrifice branch for one more year?

My Nellie

I am not an expert on Beech as they don't do well in the sub tropical heat of Florida.
Where are you keeping the tree? Some of the symptoms you describe could be caused by keeping the soil too wet.
Also, how are you fertilizing? Fertilizer burn will sometimes show up as the browning of leaf edges.
As to the sacrifice branch, that is p to your design goals. The longer you keep it the more it help the trunk enlarge, but also the bigger the scar when you take it off.

Billy M. Rhodes
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Re: Fagus problem

Post  my nellie on Thu Aug 26, 2010 3:24 pm

Thank you very much for your answer.

The tree is kept outside of course on my balkony. Its pot drains very well and the soil definitely does not retain damp.
It was fed last time mid July and had not given a sign until last week.
I have not used fertilizer to any bonsai of mine during August.
The fertilizer I use is american Nutri-Leaf60 (by Miller), 20-20-20, twice monthly and the solution is 3 sp. to 10 lt. of water. I have also used a different one in pellets...
But to tell the truth I trusted the agriculturalist who recommended Nutri-Leaf and did not search more into this matter....
Do you have something better to recommend, please?

I will try to upload some photos of leaves, if I manage to shoot clear pictures...
Thank you once again!

my nellie
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Re: Fagus problem

Post  my nellie on Thu Aug 26, 2010 9:01 pm

Of course I'd better address this to the agriculturist here, nonetheless I thought I should upload these images for reference and maybe this will help a little to show the problem.... Rolling Eyes






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Re: Fagus problem

Post  Billy M. Rhodes on Thu Aug 26, 2010 9:50 pm

Could be a fungus, as I said I am not knowledgeable about Beech.
It could also be too much water, too much fertilizer, or even to little light.

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Re: Fagus problem

Post  my nellie on Thu Aug 26, 2010 10:00 pm


my nellie
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Re: Fagus problem

Post  alexdestin on Fri Sep 03, 2010 7:59 am

If it in fact be a grove of Fagus sylvatica, ie the European beech, then there is no Unterpflanzungsvorschläge, for under beech trees growing, except now and then a fern, absolutely nothing.

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Re: Fagus problem

Post  my nellie on Fri Sep 03, 2010 10:09 am

Thank you for your reply...
Yes, it is fagus sylvatica.
But German mixed?!?
I'm afraid I cannot understand you...

Anyway, the problem of the tree is fungus and I've already sprayed once with fungicide and remains another (2nd) spraying. It seems that the disease is being checked.

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Re: Fagus problem

Post  JimLewis on Fri Sep 03, 2010 4:51 pm

Alexandra . . . it is late summer -- almost fall -- and most deciduous tree leaves are at least starting to look tired. To me, your tree's leaves look entirely appropriate for the time of year -- perhaps especially for hot, dry Greece.

I would not worry. Neither would I waste too much effort trying to "fix" it.

_________________
Jim Lewis - lewisjk@windstream.net - Western NC - People, when Columbus discovered this country, it was plumb full of nuts and berries. And I'm right here to tell you the berries are just about all gone. Uncle Dave Macon, old-time country musician

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Re: Fagus problem

Post  Guest on Fri Sep 03, 2010 5:36 pm

Tired leaves and dry hot weather do give some issues with dried out spots on thinner delicate leafs like on the Beech. It look like that is the case. This also happens here in Northern Europe. I see no real problem, just natural development at this time of the year.

I have a Hawthorn with some leaves turning brown midd July, because it was extremely dry and hot for a month. New leaves looks fine afterwards. Not every specimen copes with extreme heat and dry air no matter you sprinkle with water during the day to cool them.

Regards
Morten

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Re: Fagus problem

Post  my nellie on Fri Sep 03, 2010 5:45 pm

Thank you both, Sirs!
For your time and interest!

my nellie
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