UKTC Archive

Re: Robinia roots

Subject: Re: Robinia roots
From: Wayne Tyson
Date: Jul 12 2019 13:37:33
Esteemed John Hearne:

What is the cause of the surface development of the root system?

Wayne

On Fri, Jul 12, 2019 at 4:52 AM John Hearne <johnhearne7@xxxxxx.com> wrote:

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

--

Hearne Arboriculture

www.hearnearboriculture.com



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