A mature tree in a UAE garden earns its keep. It shades the parking bay, softens the glare off the villa wall and in the case of a date palm may even feed the household. So finding termites in trees on your own plot lands hard, and the first thought is usually whether the tree can be saved. The answer depends far less on the tree than most people expect.
What follows covers why a living tree becomes worth eating, the signs that separate a real infestation from harmless soil insects and what a colony does to a trunk once it settles in. There is also the local picture, since the species working through Emirati soil behave differently from the ones described on American websites. The last section deals with treatment, and with why the hardware shop spray is the wrong tool.
Why a Palm or Ghaf Becomes a Target
Cellulose is the whole attraction, and a tree is mostly cellulose. A healthy tree still defends itself reasonably well. Sap flow, moisture content and the chemistry of active sapwood make the outer layers unappealing. Heartwood is different. It’s dead tissue at the centre of the trunk, structurally vital but biologically inert, and that is the prize.
Colonies get in through the weak points. Roots cut during landscaping, bark stripped by a strimmer, sun scald on an exposed western face, pruning wounds that never sealed. Transplanted trees are especially vulnerable in their first two seasons, since the root ball sits in disturbed, freshly watered soil.
Irrigation is the local complication. Subterranean species need moisture, and the desert denies them that outside the wadis and oases. A garden with drip lines running daily creates a permanent damp zone in soil that would otherwise be hostile. Add mulch, buried offcuts of timber and a stump left after a removal, and the conditions are ideal. Tree termites do not colonise a garden by accident. They follow water.
Mud Tubes, Hollow Knocks and Other Early Warnings
The clearest sign is a mud tube. These are covered runways about the width of a pencil, built from soil and saliva, so the workers never cross open air. Check the deep crevices of the bark, the collar where trunk meets soil and the joins where large limbs branch off. On palms you’ll find them behind the frond bases.
Knock the trunk with a rubber mallet. A dull, papery sound over a section that should be solid points to internal galleries. Bark that lifts away with no effort is another sign. So are small holes at the base with fine soil pushed out around them, thinning foliage high in the canopy, dead branch tips and swarms of winged insects on warm evenings.
One thing not to do. If you find intact mud tubes, leave them alone. A technician reads an unbroken tube to work out whether the colony is active, how heavy the traffic is and which way it’s running. Scraping them off destroys that and sends the workers on a different route.
What a Colony Does to a Trunk Over Time
Damage runs from the inside out, which is why it stays invisible for so long. Workers hollow the heartwood into a honeycomb of galleries while the outer shell carries on looking healthy. A trunk can lose most of its internal timber and still hold a full green canopy. The tree is not starving. It’s losing the column that holds it upright.
The failure, when it comes, is sudden. A shamal blows through, the wind loads a limb that has been quietly eaten out and it drops. Date palms hide the process particularly well, since a fibrous trunk gives little away by sight. Anything parked or played on underneath is at risk.
The bigger issue sits next door. A colony feeding on a tree ten metres from your villa is not a garden problem, it is a building problem that has not arrived yet. Subterranean termites forage outward from a central nest, and once they have a reliable food source in your soil they keep exploring. Skirting boards, door frames, wardrobes and false ceiling timber are all cellulose, and none of them fight back the way a living tree does.
The Species Living Under Emirati Soil
Six species have been recorded across the UAE, and every one is subterranean. Surveys list the harvester termites Anacanthotermes ochraceus and Anacanthotermes ubachi, the sand termite Psammotermes hypostoma and the smaller wood feeders Microcerotermes diversus, Heterotermes aethiopicus and Microtermes najdensis. All reach their food through earthen galleries rather than nesting in the open.
That matters for identification. Nothing here behaves like the Formosan termites that dominate the international literature, and no established drywood species is felling shade trees in the region. Microcerotermes diversus is the one worth knowing by name, since it is a recognised pest of date palms across the Gulf and builds thin mud shelters along trunks and walls. Harvester termites are more often found cutting dry grass at night.
Which species has moved in changes the treatment plan, and that is not a judgement you can make from a phone photograph. Soldier head shape, gallery construction and foraging pattern all feed into it. Get it wrong and you treat for the wrong biology, which explains much of the termite activity in a tree that reappears months after a first attempt at control.
Why Shop-Bought Sprays Fail on a Mature Tree
Aerosol insecticide kills the individuals it touches. The colony is somewhere else, often several metres down and well away from the tree it feeds on, protected by soil and hundreds of thousands of siblings. Killing foragers on a trunk does nothing to the reproductive core, and the gap refills within days.
The homemade remedies circulating locally are worse than useless. Pouring diesel into a drilled trunk poisons the root zone, contaminates groundwater, damages the tree you were trying to rescue and still misses the nest. Drenching soil with unlicensed chemicals beside an irrigation line is a real hazard to children, pets and anyone eating the dates. Termiticide application is licensed work in the UAE for good reason.
Professional treatment goes after the colony rather than the symptom. That means an inspection to map the foraging routes, then a soil treatment applied by trenching and rodding around the tree and the building perimeter, or a baiting system where workers carry a growth regulator back to the nest. Stumps come out, buried timber gets cleared and monitoring confirms the colony has gone. For a villa garden this ties into a wider residential treatment plan, because the tree and the house share the same soil.
In Conclusion
Termites take the dead heartwood first, they arrive through soil kept damp by irrigation and they hollow a trunk from the inside long before anything shows on the surface. Mud tubes on the bark, a hollow note when you knock and a canopy dying back at the tips are the signals worth acting on. The tree matters, but the colony beneath it matters more, because termites infesting garden trees in the UAE rarely stop at the garden.
PROSHIELD has spent more than a decade treating termites across the UAE, using Municipality-approved products and eco-sensitive options that protect your family and your planting while removing the colony. Our engineers and technicians will inspect the tree, the soil and the building beside it, then set out what treatment actually requires. Contact us for a free quotation and we will take it from there.
