[CANUFNET] CTLA appraisals in Ontario

Sun Jun 10 12:22:46 EDT 2012

Hello folks

Again the Ontario supplement to the CTLA 8th edition is out of date and
redundant. WE now only use the Species Rating Chart ( note there are other
species rating charts available from past OSTC/ISA Canada work )

The updated guidance for use with the CTLA 9th edition is on the ISAO
website as Alex has indicated.

regards Jack Radecki

ISAO RPAC Chair

From: canufnet-bounces at list.web.net [mailto:canufnet-bounces at list.web.net]
On Behalf Of Oliver Reichl
Sent: June-09-12 11:40 AM
To: Canadian Urban Forest Network
Subject: Re: [CANUFNET] CTLA appraisals in Ontario

Thanks Alex/Ian/John for your replies. Some comments:

1) ISAO is apparently out of supplements and all they gave me was a
photocopy of the list of species ratings. No worksheet. Anyone have a pdf of
the whole supplement and wanna share?

2) Things started with native species on this site, and I'm very partial to
keeping it that way. Of course, I'd also prefer stock from locally sourced
seed. I chose Ulmus americana 'Princeton' because its apparently DED
resistent, still the same species, and available in the client's area, even
if it probably isn't genetically "local".

3) For sumac, in the absence of a worksheet, I'm leaning towards the species
rating for Tree-of-Heaven (because of similar leaf shape, similarly
soft-wooded, and its low rating).

4) Both "scrubby" and "tree form" Manitoba maples occur on the site. I like
Alex's Acer alternates, and am also considering A. saccharinum. Basswood has
also been suggested to me, I presume because its similarly soft-wooded and
also inclined to be multi-stemmed).

5) Yes, big quotes take time to put together, but I definitely share Ian's
opinion on this. Paying for one quote is one thing, but 3x or more can get
pricey pretty quick. I think my future response will be to spontaneously
levy a "quote administration fee" equal to the amount someone wants for
submitting a quote. They probably won't like that one bit, but odds are that
anyone who's that focused on profiteering isn't gonna be your lowest quote
anyway.

Cheers,

Oliver K. Reichl, B.E.S.(Hons)
Consulting Arborist-Ecologist
ISA Certified Arborist #ON-1178A
18 Larue Mills Rd.
1000 Islands, ON  K0E 1R0
Tel: 613-923-8833
Email: careofthetrees at gmail.com
Web: www.oliverkilian.com/treecare 

On Wed, Jun 6, 2012 at 1:22 PM, Hennessy, John <John.Hennessy at brampton.ca>
wrote:

Ian and Oliver,

We have been monitoring our Zelkovia over the past two years. Not a long
history, however we have had enough winter kill in exposed areas to adjust
our expectations . Our Zelkovia planted in the spring did moderately better
than those planted in the fall. However, any Zelkovia planted with open
north westerly exposure, did poorly.(60%mortality, 30% pedestal suckering
mess's!). 

This is the second positive comment with regards to 'sensation'. We will be
adding 'sensation to our list 2013, thank you. Our 'pioneer' and 'homestead'
are hardy where the Zelkovia fell short. We use all three, in desirable and
undesirable sites, to continue to diversify.  

John Hennessy

City of Brampton

Forestry Inspector

ISA ON1193a 

From: canufnet-bounces at list.web.net [mailto:canufnet-bounces at list.web.net]
On Behalf Of Ian Wilson
Sent: 2012/06/05 10:54 AM

To: 'Canadian Urban Forest Network'

Subject: Re: [CANUFNET] CTLA appraisals in Ontario

Oliver,

In the Pacific NW ISA Chapter we gave staghorn sumac a rating of 55.  In my
area (interior British Columbia) sumac is somewhat invasive and I would tend
to rate it lower, although I have seen it used successfully for stabilizing
steep banks and it also seems to be very drought resistant.

Acer negundo has a bad reputation for good reasons, but there is a clone of
Acer negundo that we have experimented with in the last five years - Acer
negundo 'Sensation'.  It's a male cultivar (no seeds or boxelder bugs), it
has an attractive reddish leaf colour (year round) and is a medium size
tree.  It is relatively fast growing so I suspect in the long run it might
have some of the weak wood and decay issues as the Acer negundo species, but
in the right place I think it might be a good tree choice.  I have been
impressed with this tree in parking lot islands and in sidewalk cutouts
where there is very limited soil and harsh conditions that would kill most
trees.  At a Canadian Tire parking lot near my house I have watched some of
these trees over the last 8 years growing in very small volumes of soil and
as a result they are growing quite slowly, but they don't seem to be showing
any symptoms of decline or stress and they aren't lifting any asphalt (not
yet anyway) in spite of the lack of any root barriers.  

One tree that I've been impressed with as an American elm alternative is
Zelkova serrata.  We don't have too many of them but they seem to be very
vigorous and well adapted to boulevards and difficult sites, and quite
attractive.

I don't think we've ever paid a nursery / landscaper for a quote - I would
expect they would offer free quotes if they want our business.

Ian Wilson

City of Kelowna

From: canufnet-bounces at list.web.net [mailto:canufnet-bounces at list.web.net]
On Behalf Of Oliver Reichl
Sent: Monday, June 04, 2012 7:18 AM
To: Canadian Urban Forest Network
Subject: [CANUFNET] CTLA appraisals in Ontario

Greetings:

I'm doing a large appraisal project that has brought up a couple of
interesting issues. I'm keen to hear your opinions.

1) the Ontario supplement does not contain a species rating for Staghorn
sumac, Rhus typhina. What would you consider the best alternative to use for
a species rating? (I have one in mind ... just curious to hear what others
may have used and why).

2) Acer negundo (crapwood) and Ulmus americana (disease-prone) are not
available in the marketplace. What would you consider the best alternatives
to use for replacement plant material? (Again, I have ones in mind ... but
curious to hear what others suggest or may have used and why).

3) quotes for replacement trees and their delivery/installation are an
integral part of the valuations. How much, if anything, would you pay a
nursery or landscaping firm for a quote?

Looking forward to any replies,

Oliver K. Reichl, B.E.S.(Hons)
Consulting Arborist-Ecologist
ISA Certified Arborist #ON-1178A
18 Larue Mills Rd.
1000 Islands, ON  K0E 1R0
Tel: 613-923-8833
Email: careofthetrees at gmail.com
Web: www.oliverkilian.com/treecare

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