Crown lifting - involves the removal of the lower branches to a given height above
ground level, it is achieved either by the removal of whole branches, or by the removal
of only those parts which extend below the desired clear height. This process is
normally carried out where there is a need to clear footpaths, roads, signs and also
allows for increased light. UK common practice clearance for vehicles is 5.2 metres
(17 ft) and for pedestrians 2.5 metres (8 ft).
Crown reduction-trees can be reduced in height and / or spread while preserving
a natural tree shape by crown reduction. Very substantial crown reductions should,
ideally, not be made during a single growing season since severe loss of leaf area
and multiple wounding may impair a tree’s defences against diseases and decay.
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, it should usually be confined to broadleaf
species. Crossing, weak, duplicated, dead and damaged branches should be removed.
Formative pruning- should aim to produce a tree which in maturity will be free from
major physical weaknesses. Unwanted secondary leading shoots and potentially weak
forks which could fail in adverse weather conditions, e.g. strong wind or snow, should
Pollarding- should not be used on trees that have not previously been pollarded
when they were young, as the large wounds created can initiate serious decay in mature
and maturing trees.Very heavy pruning may kill some species (e.g. beech) while others
will be stimulated to produce dense re-growth of shoots from around each wound. It
should be noted that different species of trees respond to pollarding in different
ways and pollarding may not be suitable. Willow Trees have an approximately 95% survival
rate whereas Beech Trees rarely survive the procedure.
Coppicing- a pruning technique where a tree or shrub is cut to ground level, resulting
in regeneration of new stems from the base. It is commonly used for rejuvenating
All our work is carried out according to the British Standard 3998 – 1998 Recommendations
for Tree Work.