[CANUFNET] Tree of Heaven RE: CANUFNET Digest, Vol 89, Issue 5
Kowalyk, Bohdan (MNR)
bohdan.kowalyk at ontario.ca
Wed Jun 13 09:29:46 EDT 2012
Wouldn't a male clone still release pollen able to travel distances for
reproduction with the uncontrolled population?
Bohdan
-----Original Message-----
From: canufnet-bounces at list.web.net
[mailto:canufnet-bounces at list.web.net] On Behalf Of James Urban
Sent: Wednesday, June 13, 2012 9:07 AM
To: Canadian Urban Forest Network
Subject: Re: [CANUFNET] Tree of Heaven RE: CANUFNET Digest, Vol 89,
Issue 5
Tree of heaven can be invasive, but if you specify a male cultivar those
plants are not. unfortunately the male cultivar is still in development
so you will have to wait a few more years. Jut file this away until you
see the male cultivar released.
However. Tree of heaven is not at all like sumac. It is a huge tree
while sumac is a small tree.
Jim Urban
Urban Trees + Soils
410 263 4838
On Jun 10, 2012, at 12:29 PM, Iola Price wrote:
> It will take me a bit of time (that I don't have at this point) to dig
> through my files to verify, but isn't Tree of Heaven considered
invasive or
> potentially so in Ontario? Iola Price
>
> -----Original Message-----
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> On Behalf Of canufnet-request at list.web.net
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> Subject: CANUFNET Digest, Vol 89, Issue 5
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> Today's Topics:
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> 1. Re: CTLA appraisals in Ontario (Oliver Reichl)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 9 Jun 2012 11:40:07 -0400
> From: Oliver Reichl <careofthetrees at gmail.com>
> To: Canadian Urban Forest Network <canufnet at list.web.net>
> Subject: Re: [CANUFNET] CTLA appraisals in Ontario
> Message-ID:
>
<CA+3+qfHDZ4KeDoddcVasNoMt1ZTMNCFsK16ibR+V+CHt2ewROw at mail.gmail.com>
> Content-Type: text/plain; charset="windows-1252"
>
> 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 <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****
>>
>> Please review the City of Brampton e-mail disclaimer statement at:
>> www.brampton.ca/en/Info-Centre/Pages/Privacy-Statement.aspx
>>
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