Tree Works - an explanation of terms
All tree works should be carried out to British Standard BS3998
and whilst we cannot recommend anyone to carry out tree works, we
can provide a link to the Arboricultural Association
website.
Proposed works should normally be described as follows:
Felling - Removal of the tree.
Crown Lifting - Involves the removal of
the lower branches to a given height above ground level and should
be achieved either by the removal of whole branches, or by the
removal of lateral branches which extend below the desired clear
height. The required height of crown lift should
be specified in metres.
Crown Thinning - Involves the removal of
a proportion of secondary and small, live branch growth from
throughout the crown to produce an even density of foliage around a
well spaced and balanced branch structure. This operation is
usually only performed on broad-leaved trees.
Crown thinning should be specified as a
percentage up to a maximum of 40%.
Crown Reduction - This operation involves
the removal of the branches to achieve a reduction in the height of
a tree. Consent for this operation will only be given where there
is clear justification as it can be detrimental to a trees health
and appearance. The required extent of crown
reduction should be specified in metres.
Crown Cleaning - Involves the removal of
dead, diseased, dying and broken branches. Also the removal of
sucker growth, climbing plants and other debris can be included in
this operation.
Removal of Selected Branches - This
involves the removal of selected branches that may be causing
problems, ie. overhanging property or obstructing access, etc.
Root Pruning - Any works that involve
major root disturbance involve the same restrictions which apply to
the crown of the tree.