How to Fertilize rose 'Raspberry Royale'?
Rose fertilizer every two to four weeks from spring through late summer

rose 'Raspberry Royale' · Rosa 'Raspberry Royale'
Grow in full sun in moderately fertile, humus-rich, moist but well-drained soil, and deadhead to encourage repeat flowering; for more advice, see rose cultivation
Rose fertilizer every two to four weeks from spring through late summer