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  • Article: Pollards, the forgotten art-discussion

    Po!la*d-a four letter word?

     

    One could be forgiven for thinking it is! I am almost afraid to mention the word in today’s arboricultural scene, but am I the only one who thinks it a little ironic that we now revere the very trees that where pruned in such a way we might now lynch those doing it? Is pollarding really to be considered the ultimate sin? Or is there just a lack of insight into the merits and de merits of each case, and a fear of retribution for going out on a limb and making the choice. At this time it’s a brave man that suggests “sensitive pruning” isn’t always the right approach. As a climber of 20 odd years I have done my fair share of old and veteran trees, and had to pollard (oops, blasphemy!) some for spurious reasons, not having been the one responsible for the job specification. If there is one thing I have gained through my successes and failures it is insight, a “feel” for the tree and its life from seed to senescence, its grace and ultimate glory as a grandfather of time.

    Thanks to the likes of Neville Fay and Ted green MBE the arb world is more enlightened on the whole subject of ancient trees and veteranisation, and the world seems to be awakening to a new understanding. We have come almost full circle, we grew a distain for harsh techniques and Hepting/ Shigo and others exposed the issues with poor pruning and treatments. A refined approach was born and some of us went on to become masters of the art in fine tip reductions in respect of this new knowledge. We stopped over lifting tree canopies and crucified the “over thinners” we mobbed the “purveyor’s of pollard”. While all this was going on a few of us “labourers” where reading up and taking notes, watching the debates and doing what we where told was the “best practice”.

     

    “I’m not suggesting we abandon this approach, preservation of amenity is a different game altogether”

     

     

    Now it is our turn to give some input to the debate, and I am certain there will be many “old school” climbers ready to join in. The one thing that is blindingly obvious to me is that very little respect is paid to the “experience factor” it is all well and good educating yourself and gaining a degree in arboriculture, but you can never learn from books what you learn by feel; and trees, though they may be the substance (paper) of text books, rarely are trees text book in nature. I mean no disrespect to the “consultants” but you really should pay more heed to the views and experience of climbers. The older climbers have a body of experience gained from a time when we just got on with it, rounding over, pollarding etc. We might never consider doing it these days but we know HOW to do it and how to do it well, skills that are being lost on a generation of climbers who only know the way it is today.

    What this will mean in a decade or two is that people with the very skills the veteran brigade seek to re learn will be lost, how hard can you prune? Where can we make that cut for the best compromise of vascular support and minimal dysfunction? Have we not learnt just how resilient trees can be? Decay and dysfunction are part and parcel of a trees old age, be that from natural progressive infections or via pruning wounds, they are the same end result so why fear them? I am sick to my teeth of being told I can not do this and I can not do that, when I have all my life proven time and time again that it CAN be done, but it has to be with “insight” I fear if we don’t settle the debate soon a whole gap will appear in the generations of veterans as the old ones die while we are all trying to “rediscover” the old ways. The Japanese have been “veteranising” for a thousand years, albeit on a different scale, the principles are the same. The art of producing a miniature ancient tree of visual stature and form is the same art required to recreate the ancient pollards and veterans of the medieval era. You just have to think BIG.

    I have seen some ridiculous attempts at re creating the pollard, and some pretty dire attempts at recession pruning, so bad in fact I doubt Mr X in his white transit with traces of tarmac could do a worse job! I can no longer remain silent walking the old deer parks and seeing trees unmulched unfenced and unloved, they are as much a part of our green and pleasant lands history as any building or monument yet they are left to fend for themselves much of the time despite all the current knowledge available. We need to re-evaluate the pollard fast and to think of pollarding as an option for those old trees considered for felling due to various defects, infections or even subsidence issues. I do not mean the way its done on LA budgets either for those thinking along those lines!

    Some people in the field are of the opinion that pollarding was carried out when the tree was young and while this may be true in today’s scene, it was certainly not the case in the medieval period or Tudor period. I am well aware that there exist few records of the pollarding of old. However the tree is a record of its life, it tells us like a book of a thousand pages what events took place in its life, and when. One only has to look at those old pollards of Burnham to see that pollarding was a brutal practice; the evidence is in the hollow centres. We only have to look at compartmentalisation to see how large the tree was when it was Pollarded. The now hollow stems are the new wood that formed over the dysfunctional core. While the living cambium continued to grow over the now dead part, the demons of D, death, decay and dysfunction (Shigo), moved in and had a tasty supper of lignin and/or cellulose.

    I think there was two ways possibly three of pollarding, and certain that Arborist’s of the time much like the good ones today had a “feel” for their art. I am certain that a tree that had previously been un-pollarded would have had the two major lower limbs left on and been decapitated above this point. This guaranteed that the tree would continue to grow and survive the loss of its head, like the “monarchs without head” a form that is made perfectly naturally. We have to realise that in those times text books where the preserve of the wealthy, these where craftsman whose skills where passed on to a new generation of apprentices. They also had the luxury of more trees to make mistakes with, if one or two died it was no big deal, it made good firewood! Today if we gambled with one of say three oaks on a site we would be justifiably lynched if they was to die from such a brutal practice.

    Now going back to the monarch without head, I am certain that once good re growth was established and of much more slender proportions the now only substantial wood left was also highly desirable and those limbs originally left in place where now cut back to some re growth on their length. I am certain it was this process that created those extraordinarily wide shoulders or “pollard heads” we now see especially in the Burnham beech trees. This is also evident in the way the decay columns extend into the larger thicker sections of these old pollard heads.

    This brings me to the whole demons of D thing again, and I think we need to understand these processes far better if we are to re create our heritage trees for future generations to revere. Its an area of heated debate, and an area that is still to this day largely misunderstood and understudied. I hope to convince the sceptical of the role fungi play in the longevity of trees; this is a co evolutionary process that has gone on for millennia. I have a disdain for the word attack when it comes to fungi, and prefer to think of it as taking advantage of a situation. As with all natural organisms and systems they have a role and a purpose, they are essential and should not be viewed as an “enemy”

     

    I think there may have been a time in history, and not so long ago, when mans activities actualy enhanced Bio diversity, rather than eliminated it. We are losing our way, its time to re think our strategies.

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    Pollarding is in the US ANSI standards, and also is covered there under "restoration pruning"

     

    It's in the BS thing too i am told.

     

    What are you expecting from "proven academics"? Few of them climb. Have you read Dr. David Lonsdale's book on tree risk? It's well-mentioned there, as i recall.

     

    The ball is rolling; you'll have to go faster than a trot to catch up!

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    Pollarding is in the US ANSI standards, and also is covered there under "restoration pruning"

     

    It's in the BS thing too i am told.

     

    What are you expecting from "proven academics"? Few of them climb. Have you read Dr. David Lonsdale's book on tree risk? It's well-mentioned there, as i recall.

     

    The ball is rolling; you'll have to go faster than a trot to catch up!

     

    Thanks for the reply ' treeseer '

    You seem to imply that we shouldn't listen to ' proven academics ' and seek the assistance of climbers instead but then you refer me to DR David Lonsdale :confused1:

    I have read his book incidently and I can do no better than give you his own words in relation to pollard work...

     

    ' The above considerations can be translated into some TENTATIVE guidelines, but THESE ARE BY NO MEANS FULLY TRIED AND TESTED ; nor are they a prescription that can substitute for individual and sensitive management based on local knowledge and on experience with particular species or provenances of trees '.

     

    Doesn't exactly sound like a man willing to put his neck on the line does it?

     

    Another thing which Dr Lonsdale advocates is the importance of drought stress in determining when to pollard ( or if to pollard ! ) something that seems to get lost amongst the friendly banter:001_smile:

    I'll try and trot as fast as you yanks!! cheers 'b2t'

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    Thanks for the reply ' treeseer '

    You seem to imply that we shouldn't listen to ' proven academics ' and seek the assistance of climbers instead but then you refer me to DR David Lonsdale :confused1:

    I have read his book incidently and I can do no better than give you his own words in relation to pollard work...

     

    ' The above considerations can be translated into some TENTATIVE guidelines, but THESE ARE BY NO MEANS FULLY TRIED AND TESTED ; nor are they a prescription that can substitute for individual and sensitive management based on local knowledge and on experience with particular species or provenances of trees '.

     

    Doesn't exactly sound like a man willing to put his neck on the line does it?

     

    Another thing which Dr Lonsdale advocates is the importance of drought stress in determining when to pollard ( or if to pollard ! ) something that seems to get lost amongst the friendly banter:001_smile:

    I'll try and trot as fast as you yanks!! cheers 'b2t'

     

    I have mentioned not doing it in drought several times, and when reducing also, same applies. the only pollard i ever killed was a willow drought stressed I thought being beside a lake would help, but it did not. massive cambium death occurred.

     

    Dr David Lonsdale is our finest academic arboriculturist and doesnt stick his neck out for anything less than proven fact and for good reason, he is a consummate pro, and I for one would aspire to be even half the professional he is, not saying you detracted, just my views.:001_cool:

     

    He is also very approachable which is a rare thing for such a man, and it speaks volumes of the guy, especialy putting up with a tonka like me at seminars!:lol:

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    We're just about to do a 100+ foot Poplar. Initially it was to be felled due to concerns of owner of neighbouring property. The tree leans and is made very one-sided by a couple of almighty limbs in direction of house, but not actually anywhere near it. But I met with the Forestry Commission guy and the client and we have persuaded the client to keep the tree. The FC said ok to pollard. But a proper pollard on a mature Poplar..... isn't that going to lead to further problems? I was surprised the FC bloke said to pollard, rather than side prune the large limbs and drop-crotch others to reduce and balance. Or have I misunderstood what he meant by pollard?

     

    About four years ago I pollarded a fifty to sixty foot poplar hybrid growing between and above two static caravans, to a height of about fifteen foot, just above the first major union.

    This year it was felled, almost completely dead and riddled with Armillaria mellea.

    Last winter I pollarded an eighty foot hybrid poplar, again over two caravans, on the same site. Again this was brought down to leave a fairly large stem, cut just above the first union.

    There is no doubt in my mind the result will probably be the same.

    The reason for pollarding as apposed to pruning or removal?

    Pruning would not have satisfied the management objectives as the caravan owners wanted the trees made safe in no uncertain terms.

    Removal? Well that would have meant bringing down several cubes between two caravans and would have cost more than a few quid more.

    Also, there is the lack of knowledge regarding species suitability for severe reductions from those specifying the work.

    Poplar are notoriously poor compartmentalisers with ripe wood rather than heart wood and a tendency to be readily colonized by decay organisms.

    Who ever recommended planting these trees in this location clearly did not understand trees or have much foresight.

     

    Now it looks like the monkey that butchered these trees was, well, a monkey.

     

    Perhaps there was some technical inadequacy in the way I left these 'pollards'.:biggrin:

    I am not proud, but orders is orders.:thumbdown:

    Perhaps this is not representative of others experiences of the species or genus but I am going to stick my neck out and say, in my opinion don't pollard a 100ft poplar unless you want to make it a habitat for fungi, be called back to finish the job in a few years and , best of all, look like a tree butchering rapist.:thumbdown:

     

    Sorry if that doesn't fit well, but it is one of my many guises. Don't tell anyone though.:blushing:

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    About four years ago I pollarded a fifty to sixty foot poplar hybrid growing between and above two static caravans, to a height of about fifteen foot, just above the first major union.

    This year it was felled, almost completely dead and riddled with Armillaria mellea.

    Last winter I pollarded an eighty foot hybrid poplar, again over two caravans, on the same site. Again this was brought down to leave a fairly large stem, cut just above the first union.

    There is no doubt in my mind the result will probably be the same.

    The reason for pollarding as apposed to pruning or removal?

    Pruning would not have satisfied the management objectives as the caravan owners wanted the trees made safe in no uncertain terms.

    Removal? Well that would have meant bringing down several cubes between two caravans and would have cost more than a few quid more.

    Also, there is the lack of knowledge regarding species suitability for severe reductions from those specifying the work.

    Poplar are notoriously poor compartmentalisers with ripe wood rather than heart wood and a tendency to be readily colonized by decay organisms.

    Who ever recommended planting these trees in this location clearly did not understand trees or have much foresight.

     

    Now it looks like the monkey that butchered these trees was, well, a monkey.

     

    Perhaps there was some technical inadequacy in the way I left these 'pollards'.:biggrin:

    I am not proud, but orders is orders.:thumbdown:

    Perhaps this is not representative of others experiences of the species or genus but I am going to stick my neck out and say, in my opinion don't pollard a 100ft poplar unless you want to make it a habitat for fungi, be called back to finish the job in a few years and , best of all, look like a tree butchering rapist.:thumbdown:

     

    Sorry if that doesn't fit well, but it is one of my many guises. Don't tell anyone though.:blushing:

    along the thames bank of Kew reside a group of black poplars, I pollarded these over 10 years ago, heavy too, leaving growth points (where viable) tha are doing fine seem to possibly ben done since some have lost limbs not due to pollarding but socket failures possibly associated with basal decay entries.

     

    I was not proud of the job, but did it to the best of my abilities at the time and they are doing fine

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    It does differ between the species, I've noticed certain pops take to the procedure better than others!

     

    it does seem to be some hybrids in particular the balsam crosses that suffer most

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    along the thames bank of Kew reside a group of black poplars, I pollarded these over 10 years ago, heavy too, leaving growth points (where viable) tha are doing fine seem to possibly ben done since some have lost limbs not due to pollarding but socket failures possibly associated with basal decay entries.

     

    I was not proud of the job, but did it to the best of my abilities at the time and they are doing fine

     

    Were the limbs that have been lost regrowth that failed due to weak attatchment typical of epicormic growth?

    I did manage to leave some live growth but obviously not enough. I am sure that the value of retaining photosynthetic material is not to be underestimated.

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    I have mentioned not doing it in drought several times, and when reducing also, same applies. the only pollard i ever killed was a willow drought stressed I thought being beside a lake would help, but it did not. massive cambium death occurred.

     

    Dr David Lonsdale is our finest academic arboriculturist and doesnt stick his neck out for anything less than proven fact and for good reason, he is a consummate pro, and I for one would aspire to be even half the professional he is, not saying you detracted, just my views.:001_cool:

     

    He is also very approachable which is a rare thing for such a man, and it speaks volumes of the guy, especialy putting up with a tonka like me at seminars!:lol:

     

    Hi Hamadryad,

    I have read Dr Lonsdales book and can only but recommend it to anyone interested in Tree hazard management or just trees in general. Superb.

    But if we cast back to your original post you stress the need for ' feel' and ' gut instinct' in relation to pollarding . Now for examples sake I'll use a previous post to illustrate where I'm coming from the one where an FC manager is expecting to see a pollarded poplar. What exactly is he expecting to see? A nice dutch style street pollard? A lovely story book type with hollowed centre ? What is the chances the tree is going to die because of the tree being a high risk species ?

    Can the said cutter tell the manager he has a nice feeling about it? that its his gut instinct? Or can he give him sound advice based on facts and figures collected by experts.

    Hama i'm cetainly not having a dig at Dr lonsdale , on the contrary .. but it would be nice for these guys to collate something which we could all try and impliment with confidence or else trees will just get felled.

    Take care 'bt2' :001_smile:

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