GLOSSARY OF TERMS USED
CROWN REDUCTION
The crown is defined as the part of the tree made up from the area of branches and twigs.
Reduction is usually expressed in terms of a percentage and relates to the dimension of the crown not the dimensions of the whole tree.
Wherever possible the branch being reduced should be taken back to a live growth point and the process repeated evenly throughout the entire crown, the result being a smaller and more compact form of the original.
BRANCH REDUCTIONS
This is where a branch or branches are reduced back to a suitable live growth point or side branch, either to reduce a nuisance or for aesthetic reasons.
CROWN LIFTING
Remove at source (usually at the branch collar) primary limbs and/or secondary branches to give a clear height above ground before the crown begins.
This technique is used to remove hanging or low branches that are causing an obstruction or nuisance, or to allow creation of room and light under a tree.
CROWN THIN
This is the removal of parts of branches and should be carried out evenly throughout the entire crown, the technique used is to allow light and wind to pass through the crown structure whilst retaining the general shape and form of the tree where it is visually important to do so.
CROWN CLEAN
Dead, dying or diseased wood, stumps of broken branches, snags, unwanted epicormic shoots, climbing plants (e.g. ivy) and rubbish accumulated in branch forks must be removed. Other objects such as wires, clamps or boards should also be removed without inflicting undue damage on the tree concerned.
DEADWOODING
The removal from throughout the crown of dead and broken wood down to a specific size, usually 25mm.
This technique is used to enhance the aesthetics of a tree or where there is risk of falling wood that could cause damage or injury.
FORMATIVE PRUNE
This is a general term combining dead wooding and maintenance such as the removal of crossing or weak branches, it may also include branch reduction where appropriate and, is used to facilitate the future development of the crown, usually on aesthetic lines or structural conditions.
SECTION FELLING
This is cutting to ground level by dismantling of the tree and usually involves the controlled lowering of parts of the tree by rope.
This technique is used where space is limited or where control is needed because of risk of damage to adjacent features.
FELLING
Where the tree is felled whole without the need for climbing.
POLLARDING
This is a very precise technique usually repeated at regular intervals and started when the tree is young. The process consists of reducing the branches on ‘maiden’ trees to the required shape creating a framework for regeneration, which is then regularly pruned back to the original points. The technique is often used in formal or structured landscapes.
The term ‘Pollard’ is often misused and applied to describe very heavy (%) crown reductions.
Stump Grinding
This is when the root ball of the tree is ground out by using a machine, to a depth of approximately 300mls below ground level. The stump hole is then back-filled with the stump grindings.
CROWN REDUCTION
The crown is defined as the part of the tree made up from the area of branches and twigs.
Reduction is usually expressed in terms of a percentage and relates to the dimension of the crown not the dimensions of the whole tree.
Wherever possible the branch being reduced should be taken back to a live growth point and the process repeated evenly throughout the entire crown, the result being a smaller and more compact form of the original.
BRANCH REDUCTIONS
This is where a branch or branches are reduced back to a suitable live growth point or side branch, either to reduce a nuisance or for aesthetic reasons.
CROWN LIFTING
Remove at source (usually at the branch collar) primary limbs and/or secondary branches to give a clear height above ground before the crown begins.
This technique is used to remove hanging or low branches that are causing an obstruction or nuisance, or to allow creation of room and light under a tree.
CROWN THIN
This is the removal of parts of branches and should be carried out evenly throughout the entire crown, the technique used is to allow light and wind to pass through the crown structure whilst retaining the general shape and form of the tree where it is visually important to do so.
CROWN CLEAN
Dead, dying or diseased wood, stumps of broken branches, snags, unwanted epicormic shoots, climbing plants (e.g. ivy) and rubbish accumulated in branch forks must be removed. Other objects such as wires, clamps or boards should also be removed without inflicting undue damage on the tree concerned.
DEADWOODING
The removal from throughout the crown of dead and broken wood down to a specific size, usually 25mm.
This technique is used to enhance the aesthetics of a tree or where there is risk of falling wood that could cause damage or injury.
FORMATIVE PRUNE
This is a general term combining dead wooding and maintenance such as the removal of crossing or weak branches, it may also include branch reduction where appropriate and, is used to facilitate the future development of the crown, usually on aesthetic lines or structural conditions.
SECTION FELLING
This is cutting to ground level by dismantling of the tree and usually involves the controlled lowering of parts of the tree by rope.
This technique is used where space is limited or where control is needed because of risk of damage to adjacent features.
FELLING
Where the tree is felled whole without the need for climbing.
POLLARDING
This is a very precise technique usually repeated at regular intervals and started when the tree is young. The process consists of reducing the branches on ‘maiden’ trees to the required shape creating a framework for regeneration, which is then regularly pruned back to the original points. The technique is often used in formal or structured landscapes.
The term ‘Pollard’ is often misused and applied to describe very heavy (%) crown reductions.
Stump Grinding
This is when the root ball of the tree is ground out by using a machine, to a depth of approximately 300mls below ground level. The stump hole is then back-filled with the stump grindings.