How to Prune bristly-stalked rose?
Keep single-flowering shrub roses lightly pruned, removing dead, diseased, crossing and weak growth. Thin a few old unproductive stems if crowded. Prune in late summer after flowering.

bristly-stalked rose · Rosa setipoda
Grows best in fertile, humus-rich, moist but well-drained soil in a sunny, open position. Mulch in late winter and, to improve flowering, apply a balanced fertiliser in late winter or early spring - see rose cultivation
Keep single-flowering shrub roses lightly pruned, removing dead, diseased, crossing and weak growth. Thin a few old unproductive stems if crowded. Prune in late summer after flowering.