"leucospermum truncatum" grows in fynbos on the limestone ridge close to the coast from sea level to 240 m (800 ft) altitude, between soetanysberg in the west, across the bredasdorp district, to vermaaklikheid. it can only be found on deposits of the alexandria formation. the roots of the plants often penetrate crevices in pure limestone outcrops. the species forms open thickets with "protea obtusifolia", "leucadendron meridianum" and "leucadendron muirii". the average rainfall in the range of the limestone pincushion is about per year, most of which falls during the winter. the flowerheads are primarily pollinated by birds. the seeds are released from the fruit about two months after flowering and are collected by ants that store them underground (a seed dispersal strategy that is called myrmecochory). these plants rarely survive the fires that naturally occur every decade or two in the fynbos. when afterwards the rain carries specific chemicals that are created by the fire underground, the seeds germinate and the species is so "resurrected".