How to Propagate Gamble's cotoneaster?
Propagate from seed (tree/shrub) or by semi-ripe cuttings in late summer

Gamble's cotoneaster · Cotoneaster gamblei
Grow in moderately fertile, well-drained soil in full sun; tolerant of dry conditions once established
Propagate from seed (tree/shrub) or by semi-ripe cuttings in late summer