How to Fertilize Rosa 'Cheerfulness'?
Rose fertilizer every two to four weeks from spring through late summer

Rosa 'Cheerfulness' · Rosa 'Cheerfulness'
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 and again in early summer. See rose cultivation
Rose fertilizer every two to four weeks from spring through late summer