Thinning can be carried out to remove crossed-over branches and dead wood, and allow more dappled shade to reach lower growing plants.
Thinning does not reduce the height or spread like a crown reduction.
Crown Lifting (in general)
Crown lifting is carried out to increase the clearance between the lower branches and the ground. This may be done to allow access below the tree, clear sight lines, improve views or allow more light to reach the ground.
This type of pruning does less damage to a tree than reducing the canopy size, but does require expert knowledge in order to minimise serious injury to the tree’s trunk and is best done gradually over a period of years.
Crown Lifting- Rule of Thumb
Ideally half the foliage should originate from branches on the lower two thirds of the tree and some major branches should be left on the lower half of the trunk. As usual “the devil is in the detail” so such work is best left to an expert.
Crown Reduction – Reasons for
Crown reduction may be called for where a tree has become too large for the space available, or become unsafe by virtue of it’s weight, age and load bearing capacity of the roots.
Crown Reduction – Things to bear in mind
Crown reduction is carried out to reduce the height and spread of a tree and should only be done when really needed as it can create a lot of cut points and therefore wounds. Depending on tree species, once this process is started it will need to be repeated every 3 to 7 years.
Pollarding is a pruning technique in which the upper branches of a tree are removed, promoting a dense head of foliage and branches.
Pollarding – Trees that do well
Examples of trees that do well as pollards include broadleaves such as beeches, oaks, maples, hornbeams, limes, planes, horse chestnuts, mulberries, willows, and a few conifers such as yews.
Pollarding – Some trees don’t do as well
Please note that some smaller tree species do not readily form pollards, because cutting the main stem stimulates growth from the base, effectively forming a coppice stool instead.
If a tree has been pollarded in the past it often needs to be repeated some years later. JB Landscapes will be pleased to advise on the best method of tree growth management for any variety and situation.
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