Ghaf

Ghaf is the tree the desert grows on its own. Its taproot follows water far below the surface — records for the species cite penetration of 20 metres and more in favourable ground, with some accounts over 30 metres — which is why wild ghaf stay green through July and August when almost everything around them is dormant. It was declared the national tree of the UAE in 2008, and in Dubai the oldest specimens are numbered and protected by Dubai Municipality.

In a villa garden it gives a light, airy canopy rather than dense shade. That is a strength: grasses, native grasses and low shrubs can grow underneath, and the tree never competes with a lawn for surface water the way thirsty exotic trees do. The Environment Agency – Abu Dhabi and ICBA both class it as genuinely salt tolerant, useful where irrigation water or groundwater carries some salinity, and it pairs naturally with Sidr, Samr and date palms in a desert-modern scheme.

The trade-off is patience. Ghaf spends its first two or three years building roots, so top growth is slow, and pushing it with heavy watering or feeding during that period encourages soft growth the roots cannot yet support. Plant it in the cool season, water it deeply and infrequently while it establishes, then step back — frequent shallow watering later in its life keeps roots near the surface and works against the very drought tolerance the species is known for.

Beyond horticulture, ghaf carries real weight in the UAE: it has long marked meeting places and grazing grounds, appears throughout Emirati poetry and folklore, and its presence in a modern garden reads as much as a cultural statement as a landscaping choice. Plaqued, protected specimens cannot be pruned hard, cut or moved without permission from Dubai Municipality's Public Parks and Horticulture Department.