UKTC Archive

Re: Robinia roots

Subject: Re: Robinia roots
From: Wayne Tyson
Date: Jul 12 2019 14:06:00
Hi John - No doubt true, but have you done any soil coring to determine
whether or not there is an impenetrable or restrictive layer or other
obstacle below the roots? What is the approximate dbh and height?

W

On Fri, Jul 12, 2019 at 6:59 AM John Hearne <johnhearne7@xxxxxx.com> wrote:

Hi Wayne - it's dark, moist and airy under the paviours. Suits roots sir!

On Fri, Jul 12, 2019 at 2:37 PM Wayne Tyson <wt750mv@xxxxxx.com> wrote:

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

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Hearne Arboriculture

www.hearnearboriculture.com



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