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 Palm trees in trouble 
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Joined: Mon Oct 23, 2017 9:29 pm
Posts: 57
Location: cantabria spain
Post Palm trees in trouble
What do you think is happening to these Phoenix canariensis?
Image

Image

Image
As you can see, top leaves get flattened and the new growth is smaller. It happens to mature and to old palms, not to young ones. I think 2%-3% of the palms in the area show the same problem.
Any nutrient deficiency?. What´s your opinion?
Image
Even though they are pretty close, the other one is healthy.

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Julio


Tue Jan 30, 2018 4:52 pm
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Joined: Fri Dec 04, 2009 3:23 pm
Posts: 205
Location: South Devon, UK
Post Re: Palm trees in trouble
I'd say that this looks like fairly typical symptoms of an infestation of the Red Palm Weevil, Rhynchophorus ferrugineus.

Flattened crowns and stunted fronds are classic for this. In your first picture, it's a little hard to see, but it looks like the newest fronds show some damage with chunks missing from them - another sign.

Happy to be proved wrong, but seems very likely to me. This pest has already caused so much destruction :(

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Tue Jan 30, 2018 5:25 pm
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Joined: Mon Oct 29, 2007 3:59 pm
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Location: Loughborough, Leics, central UK
Post Re: Palm trees in trouble
Sadly I think you will find it's red palm weevil Rhynchophorus ferrugineus if so all Phoenix will succumb.

Snap Ben


Tue Jan 30, 2018 5:26 pm
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Joined: Wed Oct 31, 2007 5:52 pm
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Location: Hayward- S.F. Bay area Ca.
Post Re: Palm trees in trouble
On the positive side- photo.3 seems to be a palm that has fought back to recovery. Maybe the owner treated it in time.


Tue Jan 30, 2018 8:12 pm
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Joined: Tue May 05, 2009 3:55 pm
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Location: North Thames delta UK
Post Re: Palm trees in trouble
I'm just back from a few days in Sicily and there are virtually NO Phoenix canariensis left. Gone fronm being by far the most commonly seen palm to just one or two here and there. Quite shocking, really - it is only a few years since I was last there. Now most of the planting is Washingtonia and Syagrus - cheap and fast growing.

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Wed Jan 31, 2018 2:36 pm
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Joined: Mon Oct 23, 2017 9:29 pm
Posts: 57
Location: cantabria spain
Post Re: Palm trees in trouble
Thanks for the input.
Latest news about the situation of rhynchophorus in Spain said that it had been seen and beetles trapped in neighbouring Asturias.
I´ll try to talk to people in charge of public gardens in the towns affected and warn them.
It would be a pity to lose hundreds, thousands of phoenix growing along the north coast of Spain for over a century.

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Julio


Wed Jan 31, 2018 4:39 pm
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