UKTC Archive

RE: Robinia roots

Subject: RE: Robinia roots
From: Kevin Slezacek
Date: Jul 12 2019 13:01:51
Could it just be callous formation from damage from the paving? They will 
probably send up a load of suckers as well.


Kind regards,

Kevin Slezacek
-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info <uktc-request@xxxxxx.tree-care.info> 
On Behalf Of John Hearne
Sent: 12 July 2019 12:52
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Robinia roots

Esteemed collective,

I've had to look at a Robinia that is disrupting some brick pavioured 
surfacing causing a trip hazard. The pattern of disruption showed two roots 
were causing minor lifting of bricks over lengths of about 4-5m.

But there were occasional bricks lifted significantly higher and upon 
removing these bricks there was, in each case, the underlying circa 3cm 
diameter root with a circa 5cm diameter swelling on top - for all the world 
reminiscent of an emerging pneumatophore.

I would expect, if anything, maybe flattening in regions of contact with the 
paving. But waht are these structures? Sucker initials? ENORMOUS N-fixing 
nodules?

I am going to suggest chiselling them off to bet the bricks back flat - but 
thought I ought to know what they were?

Help appreciated.

John

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