[CANUFNET] Large tree moving
Viburnum Tree Experts
viburnumtrees at shaw.ca
Sun Apr 20 13:40:54 EDT 2008
I am currently working on a project which involves the movement of a
well established Dropmore linden tree having a DBH of 28 cm. The tree is
scheduled to be moved this spring in Winnipeg. If the project goes ahead
it will certainly be a news making item. I will report on how well this
was done as I will follow its survival very carefully.
There is a local area nursery that prepares large deciduous trees for
moving in the 20 to 30 cm DBH range through successive transplantings
using a larger diameter tree spade each time. All trees are in a nursery
environment and well separated from adjacent trees. The moving success
rate is excellent.
Mike Allen MScF, RPF
Viburnum Tree Experts
Winnipeg, Manitoba
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Today's Topics:
1. How big a tree can be moved? (Without killing it that is)
(David Stevenson)
2. Re: How big a tree can be moved? (Without killing it that is)
(Jack Radecki)
3. Re: How big a tree can be moved? (Without killing it that is)
(Julian Dunster)
4. Re: How big a tree can be moved? (Without killing it that is)
(For Trees Company Ltd.)
----------------------------------------------------------------------
Message: 1
Date: Thu, 17 Apr 2008 05:37:20 -0700 (PDT)
From: David Stevenson <dcistevenson at yahoo.com>
Subject: [CANUFNET] How big a tree can be moved? (Without killing it
that is)
To: canufnet at list.web.net
Message-ID: <308582.18436.qm at web51305.mail.re2.yahoo.com>
Content-Type: text/plain; charset="us-ascii"
Hello All,
I have been receiving conflicting information about the size of tree
that can be successfully moved with a tree spade. I have heard anywhere
from 18" dbh (from a contractor who wants to move the trees) to 5" dbh
(from a developer who doesn't want to pay to move them). While there is
no point in moving trees that are going to just give up the ghost, there
must be some diameter above which the success rate drops off
unacceptably. Just wondering if anyone has any experience in the matter.
The trees in question are predominantly Colorado Blue Spruce planted ~20
years ago from nursery stock. They range in dbh from 7-11" and 5-7m in
height.
Does anyone have any information about the successful moving of large
caliper trees or know of anyone or anywhere I can find this information?
Cheers,
David Stevenson, MScF, RPF
ConsultingForester,
KBMForestry Consultants Inc.
807345-5445 x239
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Message: 2
Date: Sun, 20 Apr 2008 06:30:20 -0400
From: "Jack Radecki" <jackandali at sympatico.ca>
Subject: Re: [CANUFNET] How big a tree can be moved? (Without killing
it that is)
To: "Canadian Urban Forest Network" <canufnet at list.web.net>
Message-ID: <BAYC1-PASMTP0124B28646ADD14FCDE1E5BDE60 at CEZ.ICE>
Content-Type: text/plain; charset="iso-8859-1"
I have moved lots of trees including Colorado Spruce with a 90 inch tree
spade. On clay sites the roots are very shallow and spreading. The rule
of thumb usually is one foot of soil for every inch diameter (caliper)
Therefore up to 8 inch caliper but I have moved up to 11 inches as well
but require much TLC. Ant transplanted tree must be watered regularly to
ensure success anyways,
Jack Radecki
----- Original Message -----
From: David Stevenson
To: canufnet at list.web.net
Sent: Thursday, April 17, 2008 8:37 AM
Subject: [CANUFNET] How big a tree can be moved? (Without killing it
that is)
Hello All,
I have been receiving conflicting information about the size of tree
that can be successfully moved with a tree spade. I have heard anywhere
from 18" dbh (from a contractor who wants to move the trees) to 5" dbh
(from a developer who doesn't want to pay to move them). While there is
no point in moving trees that are going to just give up the ghost, there
must be some diameter above which the success rate drops off
unacceptably. Just wondering if anyone has any experience in the matter.
The trees in question are predominantly Colorado Blue Spruce planted
~20 years ago from nursery stock. They range in dbh from 7-11" and 5-7m
in height.
Does anyone have any information about the successful moving of large
caliper trees or know of anyone or anywhere I can find this information?
Cheers,
David Stevenson, MScF, RPF
Consulting Forester,
KBM Forestry Consultants Inc.
807 345-5445 x239
------------------------------------------------------------------------
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Message: 3
Date: Sat, 19 Apr 2008 17:05:06 -0700
From: "Julian Dunster" <jadunster at gmail.com>
Subject: Re: [CANUFNET] How big a tree can be moved? (Without killing
it that is)
To: "Canadian Urban Forest Network" <canufnet at list.web.net>
Message-ID: <003d01c8a27a$3126df00$0300a8c0 at julian>
Content-Type: text/plain; charset="iso-8859-1"
The size you describe should be simple enough. In reality I am not sure
there is a limit to the the size that can be moved. I recently saw a
very large ficus at Hong Kong disneyland that was moved on an enormous
flat bed. In the US specialised companies regularly move enormous trees
successfully. It just takes time and lots of money. Check the ISA web
site and catologue. I think it's Watson and Himelinck that is the book
you seek for more info.
jd
----- Original Message -----
From: David Stevenson
To: canufnet at list.web.net
Sent: Thursday, April 17, 2008 5:37 AM
Subject: [CANUFNET] How big a tree can be moved? (Without killing it
that is)
Hello All,
I have been receiving conflicting information about the size of tree
that can be successfully moved with a tree spade. I have heard anywhere
from 18" dbh (from a contractor who wants to move the trees) to 5" dbh
(from a developer who doesn't want to pay to move them). While there is
no point in moving trees that are going to just give up the ghost, there
must be some diameter above which the success rate drops off
unacceptably. Just wondering if anyone has any experience in the matter.
The trees in question are predominantly Colorado Blue Spruce planted
~20 years ago from nursery stock. They range in dbh from 7-11" and 5-7m
in height.
Does anyone have any information about the successful moving of large
caliper trees or know of anyone or anywhere I can find this information?
Cheers,
David Stevenson, MScF, RPF
Consulting Forester,
KBM Forestry Consultants Inc.
807 345-5445 x239
------------------------------------------------------------------------
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Message: 4
Date: Sat, 19 Apr 2008 18:22:23 -0600
From: "For Trees Company Ltd." <trees at fortrees.ca>
Subject: Re: [CANUFNET] How big a tree can be moved? (Without killing
it that is)
To: Canadian Urban Forest Network <canufnet at list.web.net>
Message-ID: <000801c8a27c$9b2a8a80$6501a8c0 at desktop>
Content-Type: text/plain; charset="iso-8859-1"
David,
The "rule of thumb" for tree moving is to transplant a tree
successfully, a rootball 10 to 12 times the diameter of the tree
measured 6 to 12 inches above the root flare must be moved with the
tree. Hence, 4" diameter tree requires about a 44" or larger rootball,
48" being ideal, or a 40" minimum. The largest treespades that can fit
on a truck are 90 inches, therefore, one should not attempt to move any
tree larger than about 8 or 9 inches at the narrowest part above the
root flare. Larger machines are sometimes available on semi-trailers, up
to 128 inches, and I have heard of large earth-moving equipment with 144
inch spades, but such machines are exceedingly rare, and quite costly to
operate, costing well into the 3 and 4 hundred thousands of dollars to
manufacture, minus the power unit. Road clearances and road loading
restrictions are often serious impediments to moving the very large
trees. Of course, in the tropics, large, 200 tonne weeping fig trees are
"routinely" moved in places like Australia, but a lot of pre and post
care is required, along with three or four computer linked 100 tonne
cranes. In Canada, standards for tree transplanting are available from
the Canadian Nursery Landscape Association. Gerard Fournier, BCMA
----- Original Message -----
From: David Stevenson
To: canufnet at list.web.net
Sent: Thursday, April 17, 2008 6:37 AM
Subject: [CANUFNET] How big a tree can be moved? (Without killing it
that is)
Hello All,
I have been receiving conflicting information about the size of tree
that can be successfully moved with a tree spade. I have heard anywhere
from 18" dbh (from a contractor who wants to move the trees) to 5" dbh
(from a developer who doesn't want to pay to move them). While there is
no point in moving trees that are going to just give up the ghost, there
must be some diameter above which the success rate drops off
unacceptably. Just wondering if anyone has any experience in the matter.
The trees in question are predominantly Colorado Blue Spruce planted
~20 years ago from nursery stock. They range in dbh from 7-11" and 5-7m
in height.
Does anyone have any information about the successful moving of large
caliper trees or know of anyone or anywhere I can find this information?
Cheers,
David Stevenson, MScF, RPF
Consulting Forester,
KBM Forestry Consultants Inc.
807 345-5445 x239
------------------------------------------------------------------------
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