Tree Surgery to a Mature Tree in Abu Dhabi

I recently supervised a major crown reduction on an over-mature Eucalyptus on an historic site in Abu Dhabi. 

I had surveyed the tree last year and made a recommendation to carry out a substantial crown reduction, due to the declining vigour of the tree and the close proximity to people and buildings.

We used a MEWP (mobile elevating work platform) to access the tree and do works to the lower areas of the crown.  The top branches were removed by use of the site crane, which could lift substantial sections of the tree and bring them safely to the ground.  I have some great video’s which I may post at a later time.

Tree Surgery to an old eucalyptus, Abu Dhabi
Tree Surgery to an old eucalyptus, Abu Dhabi

Needless to say, this type of work needs a skilled arborist and crew to carry out, which we used.  If you have complicated tree works that need carrying out, do get in touch…

Lighting Fixtures in Trees

On my last few trips to Dubai, I have been noticing a lot of trees with lighting installed in them.  Whilst these can create stunning effects at night, the correct methods of installation and maintenance are essential for the long-term well-being of the tree.  We have to put the needs of the tree first – if the light effects are more important, then just don’t use a tree!  Much of what I have seen – and this applies world-wide, not just in the UAE (I have seen equally bad wiring in the UK, Chicago, etc.) – is messy and very likely to cause long-term damage to the tree, if it doesn’t kill it entirely.

Incorrect attachment of electric cables to a tree
Incorrect attachment of electric cables to a tree. Cable or zip trees around the circumference may kill the tree, or will become overgrown by new cambial growth.  Excess cable coiled at the bottom is not needed – a light fixed at 10m high stays at that height.

We have to reconcile the fact that trees expand in girth year on year (including palms, though in a different way) through what is termed secondary growth. All this growth happens in the region just under the bark in the cambial layers and produces new meristematic tissue. Damage or restrict this layer and it effects the whole health of the tree.  Cable ties are like a choke collar to a tree; as it grows it gets choked.  Many trees will solve this by growing over such a restriction but this can leave the wood vulnerable to infection and mechanical stress.  Likewise, light mounting brackets screwed directly onto a tree become overgrown and are again a source of potential infection.

messy cabling in trees
This is a mess; transformers should be left on the ground and cabling should be neat and minimal, again, without girdling ties

If the aim of lighting is to create an aesthetic effect, it should not be at the expense of the trees aesthetic, nor of it’s health.  I can’t imagine that the lights above look very good at night, although i wasn’t there to see them on.

There is a correct way to do all this and keep the tree in good health (as far as any interference can be healthy).  If you have such a project, either existing or potential, please contact me to discuss assistance in achieving best practice.