How to Fertilize leafy rose?
Rose feed in spring and after each major flush

leafy rose · Rosa foliolosa
Also known as: white prairie rose
Tolerant of a range of conditions but best in full sun with fertile, humus-rich, moist but well-drained soil. Mulch with well-rotted organic matter in late winter or early spring, and for best flowering apply a general rose or shrub fertiliser in early spring and again in early summer. See rose cultivation
Rose feed in spring and after each major flush