Spinifex Red Sands

Spinifex Red Sands is an original illustration set in Central Australian Desert. It lies in the subtropics, where the climate is hot desert — evaporation far outruns rainfall.

Dense hemispherical hummocks of stiff radiating needle leaves repeat at even spacing across red sand. Low wind-rippled dune ribs run between them. A flat weathered sandstone mesa stands far off. Nothing else interrupts the plain, and the winter light is dry and clear.

Why are the grass clumps so evenly spaced?

The even spacing is not planting — it is competition. Where water is the limiting resource, each clump claims a root radius and nothing establishes inside it, so the vegetation self-organises into a grid. Needle leaves are rolled to cut water loss. Red sand means iron oxide on land old enough to have weathered undisturbed for a very long time, and the flat-topped mesa is what erosion leaves of horizontal sandstone.

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