Pollards - Leave fingers or not

[Tony Croft aka hamadryad]

We work to the Lozzatrees rule but with a 3 to 4 multiplier for limes rather than 5.

 

what is this Lozzatrees method, though it may have been a witty thing that went over my head!

[sloth]

We have a rule of thumb for leaving stubs on ancient pollarded Hornbeams at Hatch Park SSSI. We have been doing stage reductions there over the last ten years and are now on the 2nd cut where we cut the regrowth back to the vicinity of the bole leaving stubs and some lower lateral growth where possible.

 

The guide for length of stubs is "five times the diameter" so look for the thickest stem, guess it's diameter, multiply by five this gives you a rough gauge of the length of stub from the bole and then cut the other stems at around that height while looking to retain dormant buds and epicormic growth where possible.

 

I'll try and post some pics if I can find some.

 

Re: Tony Croft's recent post, ditto on the reading material, also check out Dr David Lonsdale his research on effects of pruning on trees is quite enlightening.

 

The lozzatrees method

 

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[Eddy_t]

Isn't that saying effectively 'don't turn big trees into pollards'? As for stubs, isn't that down to the usage and specie of the target? When I removed all growth of some willow pollards, the management was for ecological grounds, but other trees have been reductions, so have left knuckles, and on others I have left stubs, in some cases, over one foot of branch, so I would have thought really it would be down to the professional's discretion on how it would be ideally managed?

[JonnyVine]

Bang on Edd.

[Tony Croft aka hamadryad]

Isn't that saying effectively 'don't turn big trees into pollards'? As for stubs, isn't that down to the usage and specie of the target? When I removed all growth of some willow pollards, the management was for ecological grounds, but other trees have been reductions, so have left knuckles, and on others I have left stubs, in some cases, over one foot of branch, so I would have thought really it would be down to the professional's discretion on how it would be ideally managed?

 

thats what I have been saying above also:001_smile:

 

But also that with special circumstances (i.e structural faults) pollarding may be initiated (as the standard suggests in annexe C) on larger dimensions than those within the "normal parameters" I.e as the standard suggests 50mm-200mm

[Lozzatrees]

I should point out that we only use the "Lozzatrees" method as you call it on ancient and veteran trees. Normal younger pollards such as Lime, Willow or Poplar get the more traditional short back and sides approach.

[daltontrees]

The lozzatrees rule of thumb as used by us is for repollarding lapsed pollards. The Lollipop Lime annual scalp seems to me so unnatural as to need no rationalisation in terms of tree physiology.

[Eddy_t]

The lozzatrees rule of thumb as used by us is for repollarding lapsed pollards. The Lollipop Lime annual scalp seems to me so unnatural as to need no rationalisation in terms of tree physiology.

 

An annual scalp would have been used for animal fodder in times gone by, it is only like a crown shatter and aurochs or deer grazing a low shatter

[JonnyVine]

I hear that in BS 3998/2013 its not going to be an annual scalp, its going to be called a "Lionel Blair".

I concur on the animal fodder though, in summer it realy makes their coats shine, something to do with the Stoma in the leaves being fully closed I believe.

[David Humphries]

No relevance other than its an image of pollard fingers from somewhere where trees perhaps are of lesser importance.

 

 

 

 

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