UKTC Archive

RE: Water Demand of Photinia

Subject: RE: Water Demand of Photinia
From: "will Ross"
Date: Jan 08 2021 12:37:50
Jon,
       In their native environment some Photinias reach a fair size as a 
small tree, in the case of this plant I've erred on caution and gone for 
medium, the client required plan ID and the NHBC classification, they'd put a 
wooden pool house up under PD rights then discovered it needed building regs 
so are having  make a retrospective app. Hopefully my involvement will go no 
further than the id, I have a nasty feeling that BC may require underpinning 
of one corner. Same old story with people taking short cuts.

Will

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info <uktc-request@xxxxxx.tree-care.info> 
On Behalf Of Jon Heuch
Sent: 08 January 2021 10:26
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Re: Water Demand of Photinia

Whilst Giles Biddle may have been around for the initiation of "water demand" 
things have moved on in a variety of ways.

 

To answer Wayne's question in a round about sort of way, it is an empirical 
risk assessment, based on experience & the risk of claims; it is not strictly 
"scientific".

 

Whilst many arborists know of NHBC they may know less about the likes of LABC 
and newer comers like Premier Guarantee.  They are competitors for the same 
or similar markets. Any similarity between their respective products is 
purely coincidental so you will see similarities but you will also see 
differences, possibly deliberate differences in part, possibly, so they can 
say they have not copied their competitors. The fact that staff have moved 
between organisations does make the history of their products a little 
incestuous.

 

What does this have to do with trees? All three  have to specify the depth of 
foundations near trees...and their tables are different. I've no time to 
spell out these out but they can be quite different. LABC for example group 
many more species as low water demand..NHBC can move species between 
categories, dependent on their experience of claims.

 

Just to warn you!

 

As for Photinia I would treat it like privet in terms of its potential size 
i.e. it could be a small tree. That doesn't really answer your question!

 

Jon




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