Crown Reduction

Is usually carried out when the crown is dying back. Dead wood needs to be removed and cut back to live wood to promote new growth.

However, this is not generally recommended practice on a healthy tree, as it will create future problems.

Crown reduction is NOT tree topping or tree lopping. Instead, when crown reduction is complete, there is still plenty structure left in the tree crown.

Crown reduction is for the purpose of reducing weight off the tops of trees and does not always mean reducing the height, although height is often reduced too but it’s a case by case basis.

The crown of a tree is what catches the force of storms.

When wind catches the crown it can cause limbs to fail and break off or the tree itself to uproot.

Crown reduction can reduce the possibility of such damage. The top of a tree acts as a sail especially when in leaf, and when the wind blows the crown catches the wind.

Crown reduction reduces the size of the sail so that the wind has less of an impact on the tree .



The crown reduction of a healthy tree can have the opposite effect, it can create vigor which in return can congest the crown and create more problems later,  crown reduction on healthy trees will only be short term solution and long term will involve more expense on further crown reductions.

The most common problem is a case of the wrong tree wrong place.

Crown reduction work is generally carried out on trees that are diseased or in declined, leaders and lateral branches should be pruned back to a suitable side branch which has a diameter not less than 30% of the diameter of the part being removed. Think about what to plant and where!

Before any reduction work is carried out on mature trees the site is inspected for risks and wildlife, bats nesting birds etc all of which are protected by law.


Tree reductions can be carried out by a MEWP (Mobile Elevated Work Platform) or be  tree surgeons climbing the tree.


Norfolk Trees was established in 2002 by Ashley Barnes, we operate throughout Norfolk and East Anglia. Our tree surgeons are all fully qualified for the work which they undertake and have over years experience in all aspects of tree care, which include dismantling, felling, crown lifting and reductions, dead wood removal, formative pruning, tree surveys to BS5837, tree hazard reports, pest and disease diagnosis, bat inspections, stump grinding or treating and tree planting.


Our staff allow clients to be confident and assured of the quality of our work and a £10,000,000 public liability insurance offers peace of mind. All work is carried out to BS3998 2010. In addition to domestic work we undertake commercial work for Local Authorities, Parish Councils and contract to the Borough Council of Kings Lynn and West Norfolk, Breckland Council and Serco, South Norfolk Council, Broadland Council, NCC Highways, KierMG and Anglian Water along with numerous other clients.


We are also approved by the Arboricultural Association and Norfolk County Council and are CHAS Accredited

Contractors Health & Safety Assessment Scheme.