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<DIV>In Regina, our forestry bylaw states that no person can plant a tree on city property without the approval of the director or his designate. We do plant Hybird poplar, mostly in parks, but we have control over what species are planted on city property, but not on private property. limbs overhanging neighbours property are a matter between neighbours and I do not feel we should go there.</DIV>
<DIV> </DIV>
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<DIV>Glenn Chernick</DIV>
<DIV>Forestry Technician</DIV>
<DIV>City of Regina</DIV>
<DIV>Phone (306)777 7343</DIV>
<DIV>Cell (306) 535 4623</DIV><BR><BR>>>> <canufnet-request@list.web.net> 17/Jun/2010 6:05 am >>><BR>Send CANUFNET mailing list submissions to<BR>canufnet@list.web.net<BR><BR>To subscribe or unsubscribe via the World Wide Web, visit<BR><A href="http://list.web.net/lists/listinfo/canufnet">http://list.web.net/lists/listinfo/canufnet</A><BR>or, via email, send a message with subject or body 'help' to<BR>canufnet-request@list.web.net<BR><BR>You can reach the person managing the list at<BR>canufnet-owner@list.web.net<BR><BR>When replying, please edit your Subject line so it is more specific<BR>than "Re: Contents of CANUFNET digest..."<BR><BR><BR>Today's Topics:<BR><BR> 1. Re: hybrid poplar tree hazard (Stephen Smith)<BR> 2. Re: CANUFNET Digest, Vol 66, Issue 8 (Koskinen, Jennifer)<BR><BR><BR>----------------------------------------------------------------------<BR><BR>Message: 1<BR>Date: Wed, 16 Jun 2010 16:04:47 -0400<BR>From: "Stephen Smith" <ufora@idirect.com><BR>Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR>To: "Canadian Urban Forest Network" <canufnet@list.web.net><BR>Message-ID: <8B23E30B3A2349959467F672AFDD3282@UforaMain3><BR>Content-Type: text/plain; charset="iso-8859-1"<BR><BR>I just condemned 5 C. poplars this week as they were right beside a house, 80cm DBH. 50% dead now and more coming. We can only manage the risk of others prior bad choices as best we can. I retain them in parks and forests where they can do little harm.<BR><BR>Stephen Smith<BR>Urban Forest Associates Inc.<BR>Urban Forestry and Ecological Restoration<BR>www.ufora.ca<BR> ----- Original Message ----- <BR> From: Menounos, Kim <BR> To: 'Canadian Urban Forest Network' <BR> Sent: Wednesday, June 16, 2010 2:22 PM<BR> Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR><BR><BR> We are constantly in the same philosophical debate about Cottonwood trees in a local park. The trees are very large (same latitude as Thunder Bay!) and old. There are no residents close by, so it's a much lower risk. <BR><BR> <BR><BR> The reason I am weighing in is just to mention that these trees appear to get to a point/age when their limbs become a hazard from falling. It isn't predictable, ie. only after a windstorm, and they are huge! We can manage this risk because their benefit to the local riparian ecosystem is important and the visitors to the park are less frequent. However, I personally would not want to bear the risk of one of these trees on my private property for this very reason! The context has to be part of the discussion. Is the property/tree owner going to be able to predict when a large limb is going to fall (and they will continue to fall because of the species) and be able to mitigate the hazard by having an arborist in in time to keep someone from being hurt? <BR><BR> <BR><BR> Kim Menounos, RPF<BR><BR> City of Prince George<BR><BR> <BR><BR> From: canufnet-bounces@list.web.net [mailto:canufnet-bounces@list.web.net] On Behalf Of Stephen Smith<BR> Sent: June 16, 2010 9:28 AM<BR> To: Canadian Urban Forest Network<BR> Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR><BR> <BR><BR> I wouldn't condemn a tree just because of risk that something might/will happen sometime in the future based on species alone. It has to demonstrate an imminent risk of failure now. <BR><BR> <BR><BR> That said, I wouldn't recommend planting them if I know of these characteristics, subject to other goals for planting that might be more important at the time.<BR><BR> <BR><BR> If I want to remove one because of species, say a large Manitoba maple because it's an invasive species, I will remove it on that basis not future presumed risk, even if it has future risk of failure too but isn't imminent now. If your municipality doesn't make allowances for invasive species or other reasons for removal than imminent hazard, then it might get more complicated.<BR><BR> <BR><BR> Stephen Smith<BR> Urban Forest Associates Inc.<BR> Urban Forestry and Ecological Restoration<BR> www.ufora.ca<BR><BR> ----- Original Message ----- <BR><BR> From: Vince Rutter <BR><BR> To: Canadian Urban Forest Network <BR><BR> Sent: Wednesday, June 16, 2010 9:52 AM<BR><BR> Subject: [CANUFNET] hybrid poplar tree hazard<BR><BR> <BR><BR><BR> A client's neighbour owns two large hybrid poplar (similar to cottonwood) trees that overhang his property. They are healthy vigourous trees, both with many codominant stems and are quite large (2 metre DBH). That's pretty big for here in Thunder Bay! Over the past several years there have been many occasions where branches have snapped and fallen which is typical of the species. The branches are anywhere from 2 inches to 5 or 6 in diameter. They are truly concerned about the tree and would like to compel the owners to take action.<BR> At best, we could clean the crown, reduce long branches and support included branch connections by cabling but I don't feel that would greatly reduce the risk of occasional limb breakage. That said, have any of you condemned a tree based on its species characteristics like these poplars? <BR> This problem comes up fairly frequently here and it usually leads to tree removal but in this case all parties involved can't come to an agreement. <BR><BR> Any insight would be greatly appreciated.<BR><BR> -- <BR> Vince Rutter, RPF<BR> ISA Certified Arborist<BR> www.rutterurbanforestry.ca<BR> 807-627-6201<BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL: <<A href="http://list.web.net/archives/canufnet/attachments/20100616/6844f53b/attachment">http://list.web.net/archives/canufnet/attachments/20100616/6844f53b/attachment</A>-0001.htm><BR><BR>------------------------------<BR><BR>Message: 2<BR>Date: Wed, 16 Jun 2010 15:33:34 -0600<BR>From: "Koskinen, Jennifer" <Jennifer.Koskinen@stantec.com><BR>Subject: Re: [CANUFNET] CANUFNET Digest, Vol 66, Issue 8<BR>To: <canufnet@list.web.net><BR>Message-ID:<BR><06249161196F8C43BD7772FDB497F56E82561F@CD1001-M240.corp.ads><BR>Content-Type: text/plain;charset="us-ascii"<BR><BR>Hey Vince,<BR><BR>In regard to if I have recommended removal of trees based on species,<BR>yes; but it depends on the situation and the tree.<BR><BR>In regard to this particular case of the poplars, I was thinking if<BR>maybe you conduct a formal hazard tree assessment and see what the<BR>result is. The resident that wants the tree removed would have the<BR>assessment completed. If the Tree hazard Evaluation Form results in the<BR>tree being a hazard this could be brought to the tree owners attention<BR>and therefore a reason to remove the tree. If the tree is considered a<BR>hazard and they do not remove it, it could lead to future legal matters<BR>of course.<BR> <BR>If the tree is NOT considered a hazard (as it sounds like it is in good<BR>condition) then:<BR><BR>1) on the side of getting the tree removed, maybe providing the tree<BR>owner with information about the tree; i.e typical life span of this<BR>species and tree characteristics like diffuse-porous wood (weak wood),<BR>co-domin stems = included bark = possibility of stem failure, pollen<BR>allergies?... this information may result in the tree owner wanting the<BR>tree removed... with option of native tree replacement of course.<BR>Or<BR>2) on the side of trying to retain the tree; providing to the<BR>neighbor/client that wants the tree removed that the tree is not<BR>considered a hazard and to stop asking for the tree to be removed and<BR>just live with having the tree routinely pruned to prevent falling<BR>limbs.<BR><BR>Sounds like an awesome huge tree though. T.bay represent ; )<BR><BR>Jennifer Koskinen, HBESfcon<BR>ISA Certified Arborist ON-1234A<BR>Stantec<BR>49 Frederick Street<BR>Kitchener ON N2H 6M7<BR>Ph: (519) 585-7442<BR>Fx: (519) 579-7932<BR>jennifer.koskinen@stantec.com<BR>www.stantec.com<BR><BR>The content of this email is the confidential property of Stantec and<BR>should not be copied, modified, retransmitted, or used for any purpose<BR>except with Stantec's written authorization. If you are not the intended<BR>recipient, please delete all copies and notify us immediately.<BR><BR>Please consider the environment before printing this email.<BR><BR>-----Original Message-----<BR>From: canufnet-bounces@list.web.net<BR>[mailto:canufnet-bounces@list.web.net] On Behalf Of<BR>canufnet-request@list.web.net<BR>Sent: Wednesday, June 16, 2010 3:37 PM<BR>To: canufnet@list.web.net<BR>Subject: CANUFNET Digest, Vol 66, Issue 8<BR><BR>Send CANUFNET mailing list submissions to<BR>canufnet@list.web.net<BR><BR>To subscribe or unsubscribe via the World Wide Web, visit<BR><A href="http://list.web.net/lists/listinfo/canufnet">http://list.web.net/lists/listinfo/canufnet</A><BR>or, via email, send a message with subject or body 'help' to<BR>canufnet-request@list.web.net<BR><BR>You can reach the person managing the list at<BR>canufnet-owner@list.web.net<BR><BR>When replying, please edit your Subject line so it is more specific<BR>than "Re: Contents of CANUFNET digest..."<BR><BR><BR>Today's Topics:<BR><BR> 1. Re: hybrid poplar tree hazard (Listar, Ivan)<BR> 2. Re: hybrid poplar tree hazard (pwynnyczuk@richmondhill.ca)<BR> 3. Re: hybrid poplar tree hazard (Stephen Smith)<BR> 4. Re: hybrid poplar tree hazard (Menounos, Kim)<BR><BR><BR>----------------------------------------------------------------------<BR><BR>Message: 1<BR>Date: Wed, 16 Jun 2010 12:12:28 -0400<BR>From: "Listar, Ivan" <ilistar@london.ca><BR>Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR>To: "Canadian Urban Forest Network" <canufnet@list.web.net><BR>Message-ID: <AD3CBE3FB0538D42A2029F3A819C1799175C06@clexch02.col><BR>Content-Type: text/plain; charset="us-ascii"<BR><BR>We just added Paulownia (aka Empress tree, Princess tree) and buckthorn<BR>species to our list of prohibited species on City property this spring<BR>because of their characteristics. There are people who want to<BR>establish the Empress tree in southern Ontario and buckthorn is an<BR>invasive species. Our Boulevard Tree Protection By-law allows us to<BR>remove prohibited species from City property without notification to the<BR>adjacent residents. We have other prohibited species as well.<BR>Unfortunately we do not have a private tree by-law to keep them from<BR>getting established on private property. Our Property Standards by-law<BR>is used to enforce the removal of trees, regardless of species, once<BR>they become a hazard. <BR><BR><BR><BR>Ivan Listar, R.P.F. <BR>Urban Forester, City of London <BR>A.J. Tyler Operations Centre <BR>663 Bathurst St. <BR>London, Ont. N5Z 1P8 <BR>Phone: 519-661-2500 ext. 4977 <BR>mailto:ilistar@london.ca <BR>fax: 519-661-2352 <BR><BR>________________________________<BR><BR>From: canufnet-bounces@list.web.net<BR>[mailto:canufnet-bounces@list.web.net] On Behalf Of Vince Rutter<BR>Sent: Wednesday, June 16, 2010 9:53 AM<BR>To: Canadian Urban Forest Network<BR>Subject: [CANUFNET] hybrid poplar tree hazard<BR><BR><BR><BR><BR>A client's neighbour owns two large hybrid poplar (similar to<BR>cottonwood) trees that overhang his property. They are healthy<BR>vigourous trees, both with many codominant stems and are quite large (2<BR>metre DBH). That's pretty big for here in Thunder Bay! Over the past<BR>several years there have been many occasions where branches have snapped<BR>and fallen which is typical of the species. The branches are anywhere<BR>from 2 inches to 5 or 6 in diameter. They are truly concerned about the<BR>tree and would like to compel the owners to take action.<BR>At best, we could clean the crown, reduce long branches and support<BR>included branch connections by cabling but I don't feel that would<BR>greatly reduce the risk of occasional limb breakage. That said, have<BR>any of you condemned a tree based on its species characteristics like<BR>these poplars? <BR>This problem comes up fairly frequently here and it usually leads to<BR>tree removal but in this case all parties involved can't come to an<BR>agreement. <BR><BR>Any insight would be greatly appreciated.<BR><BR>-- <BR>Vince Rutter, RPF<BR>ISA Certified Arborist<BR>www.rutterurbanforestry.ca<BR>807-627-6201<BR><BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL:<BR><<A href="http://list.web.net/archives/canufnet/attachments/20100616/0d494347/att">http://list.web.net/archives/canufnet/attachments/20100616/0d494347/att</A><BR>achment-0001.htm><BR><BR>------------------------------<BR><BR>Message: 2<BR>Date: Wed, 16 Jun 2010 12:06:14 -0400<BR>From: pwynnyczuk@richmondhill.ca<BR>Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR>To: Canadian Urban Forest Network <canufnet@list.web.net><BR>Message-ID:<BR><BR><OF00A81EE9.2C7DB342-ON85257744.0057A7F3-85257744.00587921@richmondhill.<BR>ca><BR><BR>Content-Type: text/plain; charset="us-ascii"<BR><BR>If the limbs are shed randomly, ie., no wind, only in summer, or no <BR>evidence of decay, at one time I remember a comment related to Poplars, <BR>particularly Carolina Poplar, Populus canadensis, in terms of moisture <BR>levels in the wood affecting structural soundness.<BR>Rapid changes in weather, wet to dry and vice versa can lead to <BR>significant fluctuation in the wood cell size. If there are preexisting <BR>weak points in the limbs, these are magnified over time until breakage.<BR><BR><BR>Any one have similar information?<BR><BR>Regards,<BR>Peter Wynnyczuk<BR><BR>Urban Forestry Supervisor<BR>Town of Richmond Hill<BR>Community Service Department<BR>Telephone: 905 780-2930<BR>Fax: 905 780 -2928<BR>Internet: pwynnyczuk@richmondhill.ca<BR><BR><BR><BR><BR>From:<BR>Vince Rutter <vince@rutterurbanforestry.ca><BR>To:<BR>Canadian Urban Forest Network <canufnet@list.web.net><BR>Date:<BR>06/16/2010 11:43 AM<BR>Subject:<BR>[CANUFNET] hybrid poplar tree hazard<BR>Sent by:<BR>canufnet-bounces@list.web.net<BR><BR><BR><BR><BR>A client's neighbour owns two large hybrid poplar (similar to<BR>cottonwood) <BR>trees that overhang his property. They are healthy vigourous trees,<BR>both <BR>with many codominant stems and are quite large (2 metre DBH). That's <BR>pretty big for here in Thunder Bay! Over the past several years there <BR>have been many occasions where branches have snapped and fallen which is<BR><BR>typical of the species. The branches are anywhere from 2 inches to 5 or<BR>6 <BR>in diameter. They are truly concerned about the tree and would like to <BR>compel the owners to take action.<BR>At best, we could clean the crown, reduce long branches and support <BR>included branch connections by cabling but I don't feel that would<BR>greatly <BR>reduce the risk of occasional limb breakage. That said, have any of you<BR><BR>condemned a tree based on its species characteristics like these<BR>poplars? <BR><BR>This problem comes up fairly frequently here and it usually leads to<BR>tree <BR>removal but in this case all parties involved can't come to an<BR>agreement. <BR><BR><BR>Any insight would be greatly appreciated.<BR>-- <BR>Vince Rutter, RPF<BR>ISA Certified Arborist<BR>www.rutterurbanforestry.ca<BR>807-627-6201<BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL:<BR><<A href="http://list.web.net/archives/canufnet/attachments/20100616/34b6c356/att">http://list.web.net/archives/canufnet/attachments/20100616/34b6c356/att</A><BR>achment-0001.htm><BR><BR>------------------------------<BR><BR>Message: 3<BR>Date: Wed, 16 Jun 2010 12:28:13 -0400<BR>From: "Stephen Smith" <ufora@idirect.com><BR>Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR>To: "Canadian Urban Forest Network" <canufnet@list.web.net><BR>Message-ID: <AC422827406F4070AB180BF81ED9305E@UforaMain3><BR>Content-Type: text/plain; charset="iso-8859-1"<BR><BR>I wouldn't condemn a tree just because of risk that something might/will<BR>happen sometime in the future based on species alone. It has to<BR>demonstrate an imminent risk of failure now. <BR><BR>That said, I wouldn't recommend planting them if I know of these<BR>characteristics, subject to other goals for planting that might be more<BR>important at the time.<BR><BR>If I want to remove one because of species, say a large Manitoba maple<BR>because it's an invasive species, I will remove it on that basis not<BR>future presumed risk, even if it has future risk of failure too but<BR>isn't imminent now. If your municipality doesn't make allowances for<BR>invasive species or other reasons for removal than imminent hazard, then<BR>it might get more complicated.<BR><BR>Stephen Smith<BR>Urban Forest Associates Inc.<BR>Urban Forestry and Ecological Restoration<BR>www.ufora.ca<BR> ----- Original Message ----- <BR> From: Vince Rutter <BR> To: Canadian Urban Forest Network <BR> Sent: Wednesday, June 16, 2010 9:52 AM<BR> Subject: [CANUFNET] hybrid poplar tree hazard<BR><BR><BR><BR> A client's neighbour owns two large hybrid poplar (similar to<BR>cottonwood) trees that overhang his property. They are healthy<BR>vigourous trees, both with many codominant stems and are quite large (2<BR>metre DBH). That's pretty big for here in Thunder Bay! Over the past<BR>several years there have been many occasions where branches have snapped<BR>and fallen which is typical of the species. The branches are anywhere<BR>from 2 inches to 5 or 6 in diameter. They are truly concerned about the<BR>tree and would like to compel the owners to take action.<BR> At best, we could clean the crown, reduce long branches and support<BR>included branch connections by cabling but I don't feel that would<BR>greatly reduce the risk of occasional limb breakage. That said, have<BR>any of you condemned a tree based on its species characteristics like<BR>these poplars? <BR> This problem comes up fairly frequently here and it usually leads to<BR>tree removal but in this case all parties involved can't come to an<BR>agreement. <BR><BR> Any insight would be greatly appreciated.<BR> -- <BR> Vince Rutter, RPF<BR> ISA Certified Arborist<BR> www.rutterurbanforestry.ca<BR> 807-627-6201<BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL:<BR><<A href="http://list.web.net/archives/canufnet/attachments/20100616/dcd8edc3/att">http://list.web.net/archives/canufnet/attachments/20100616/dcd8edc3/att</A><BR>achment-0001.htm><BR><BR>------------------------------<BR><BR>Message: 4<BR>Date: Wed, 16 Jun 2010 11:22:38 -0700<BR>From: "Menounos, Kim" <kmenounos@city.pg.bc.ca><BR>Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR>To: 'Canadian Urban Forest Network' <canufnet@list.web.net><BR>Message-ID:<BR><FFEA615C5F697646A14031F014DB343D2CCB50DCBA@mail.city.pg.bc.ca><BR>Content-Type: text/plain; charset="us-ascii"<BR><BR>We are constantly in the same philosophical debate about Cottonwood<BR>trees in a local park. The trees are very large (same latitude as<BR>Thunder Bay!) and old. There are no residents close by, so it's a much<BR>lower risk.<BR><BR>The reason I am weighing in is just to mention that these trees appear<BR>to get to a point/age when their limbs become a hazard from falling. It<BR>isn't predictable, ie. only after a windstorm, and they are huge! We can<BR>manage this risk because their benefit to the local riparian ecosystem<BR>is important and the visitors to the park are less frequent. However, I<BR>personally would not want to bear the risk of one of these trees on my<BR>private property for this very reason! The context has to be part of the<BR>discussion. Is the property/tree owner going to be able to predict when<BR>a large limb is going to fall (and they will continue to fall because of<BR>the species) and be able to mitigate the hazard by having an arborist in<BR>in time to keep someone from being hurt?<BR><BR>Kim Menounos, RPF<BR>City of Prince George<BR><BR>From: canufnet-bounces@list.web.net<BR>[mailto:canufnet-bounces@list.web.net] On Behalf Of Stephen Smith<BR>Sent: June 16, 2010 9:28 AM<BR>To: Canadian Urban Forest Network<BR>Subject: Re: [CANUFNET] hybrid poplar tree hazard<BR><BR>I wouldn't condemn a tree just because of risk that something might/will<BR>happen sometime in the future based on species alone. It has to<BR>demonstrate an imminent risk of failure now.<BR><BR>That said, I wouldn't recommend planting them if I know of these<BR>characteristics, subject to other goals for planting that might be more<BR>important at the time.<BR><BR>If I want to remove one because of species, say a large Manitoba maple<BR>because it's an invasive species, I will remove it on that basis not<BR>future presumed risk, even if it has future risk of failure too but<BR>isn't imminent now. If your municipality doesn't make allowances for<BR>invasive species or other reasons for removal than imminent hazard, then<BR>it might get more complicated.<BR><BR>Stephen Smith<BR>Urban Forest Associates Inc.<BR>Urban Forestry and Ecological Restoration<BR>www.ufora.ca<<A href="http://www.ufora.ca">http://www.ufora.ca</A>><BR>----- Original Message -----<BR>From: Vince Rutter<mailto:vince@rutterurbanforestry.ca><BR>To: Canadian Urban Forest Network<mailto:canufnet@list.web.net><BR>Sent: Wednesday, June 16, 2010 9:52 AM<BR>Subject: [CANUFNET] hybrid poplar tree hazard<BR><BR><BR>A client's neighbour owns two large hybrid poplar (similar to<BR>cottonwood) trees that overhang his property. They are healthy<BR>vigourous trees, both with many codominant stems and are quite large (2<BR>metre DBH). That's pretty big for here in Thunder Bay! Over the past<BR>several years there have been many occasions where branches have snapped<BR>and fallen which is typical of the species. The branches are anywhere<BR>from 2 inches to 5 or 6 in diameter. They are truly concerned about the<BR>tree and would like to compel the owners to take action.<BR>At best, we could clean the crown, reduce long branches and support<BR>included branch connections by cabling but I don't feel that would<BR>greatly reduce the risk of occasional limb breakage. That said, have<BR>any of you condemned a tree based on its species characteristics like<BR>these poplars?<BR>This problem comes up fairly frequently here and it usually leads to<BR>tree removal but in this case all parties involved can't come to an<BR>agreement.<BR><BR>Any insight would be greatly appreciated.<BR>--<BR>Vince Rutter, RPF<BR>ISA Certified Arborist<BR>www.rutterurbanforestry.ca<<A href="http://www.rutterurbanforestry.ca">http://www.rutterurbanforestry.ca</A>><BR>807-627-6201<BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL:<BR><<A href="http://list.web.net/archives/canufnet/attachments/20100616/7106cb0d/att">http://list.web.net/archives/canufnet/attachments/20100616/7106cb0d/att</A><BR>achment.htm><BR><BR>End of CANUFNET Digest, Vol 66, Issue 8<BR>***************************************<BR><BR><BR><BR><BR>End of CANUFNET Digest, Vol 66, Issue 10<BR>****************************************<BR></DIV><BR>
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