Knowledge Centre

An evergreen adapted to dry calcareous conditions — and, despite being the region's signature tree, absent from every source we could reach.

A vigorous deciduous tree usually grown as much for shade as for fruit — and the species in this hub with the least evidence behind it.

A deciduous, drought-adapted tree that is more often over-fed than under-fed — and another species for which we hold no specific evidence.

A deciduous fruit tree with a genuine dormant period — and no species-specific evidence in any source we could reach.

One published removal figure, a strong nitrogen caution, and an honest account of how little species-specific evidence we hold.

The best-documented fruit tree in our sources, and the one whose commonest local complaint — yellow leaves — usually has nothing to do with how much...

Date palms tolerate more salt than any other fruit crop — but tolerance has a documented limit, and FAO publishes the thresholds.

Palms root differently from broadleaf trees, and the trunk is emphatically the wrong place. Where to apply and why.

A mature palm in reasonable health rarely needs routine feeding. When it declines, the cause is usually water, salt or roots.

Ornamental palm species are not date palms, and the evidence available for them is much thinner. What that means in practice.

Two micronutrients that fail on the newest fronds, look almost identical, and are the frequent shortages on alkaline calcareous soil.

A widely repeated claim about potassium and magnesium in palms — and an honest account of how little of it we can source.