UKTC Archive

RE: Poplar seed

Subject: RE: Poplar seed
From: Howe, Ron
Date: Sep 04 2017 12:05:10
I did a fair old bit of research into this stuff some years back as a result 
of an appeal and, people get very confused. On the whole, tree seeds are too 
large or heavy to cause allergy. It is the pollen that is the main 
aggravator. Many tree species also have pollen that is too large and heavy 
also. I suspect that the there may be some confusion over the Cottonwood 
seed. However it may well be the case that the fine hairs making up the 
cotton wrapping the seed might cause nasal irritation but again I suspect 
they are too large. It is pretty much the stuff we can't see that leads to 
problems ... the stuff you see dancing in a beam of light breaking through 
your curtains. In the autumn you see plenty of Conifer dust about but what is 
more likely to be the problem then is Aspergillus fungi spores which abound 
all over our trees but more often on Conifers due to the conditions. I note 
one of the articles was a little vague as well, quoting all sorts of other 
problems such as blocking car radiators. That is usually the type of annoying 
nuisance that leads to such misunderstandings. On the whole, for something to 
lead to allergy it needs to be small enough for the immunoglobulin (IgE) 
cells to react to as a result of enzymes produced by the allergen and that 
can occur simply as result of the allergen dissolving in the fluids linings 
of your nose or lung. Quite often parasites are relatively large but they 
produce chemicals, enzymes.  The fine hairs of most cottony seeds are 
silicone which is more likely to cause irritation. Makes sense once it's all 
explained ...

Ron Howe
Tree Officer (Planning)
Mole Valley District Council
Tel. 01306 XXX XXX


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of will ross
Sent: 21 August 2017 12:29
To: UK Tree Care
Subject: RE: Poplar seed

Edmund,
                 Try these  , I managed to find a few links 
http://www.scidev.net/south-asia/forestry/news/female-poplars-linked-to-allergies.html
 

http://www.ehow.com/facts_5475931_symptoms-allergies-cottonwood.html 

Regards

Will
-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of Edmund Hopkins
Sent: 21 August 2017 11:27
To: UK Tree Care
Subject: Poplar seed

Is anyone aware of a medical condition or conditions associated with the 
'cotton wool' produced by (some) Poplars in the early summer? I'm sorry to 
use the term 'cotton wool' but the technical term escapes me.

Regards,

Edmund Hopkins
Tree Officer
Heritage and Urban Design
City Planning
0115 XXXXXXX

This email is security checked and subject to the disclaimer on web-page: 
http://www.nottinghamcity.gov.uk/privacy-statement This message has been 
scanned by Exchange Online Protection.



--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy 
http://www.boskytrees.co.uk/




--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy 
http://www.boskytrees.co.uk/

________________________
This email was scanned by our anti-virus solution.



-- 
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/