How to Fertilize rose 'Deep Secret'?
Rose feed in spring and after each major flush

rose 'Deep Secret' · Rosa 'Deep Secret'
Grow in full sun with fertile, humus-rich, moist but well-drained soil. For best flowering apply a balanced fertiliser and mulch in late winter or early spring and a balanced fertiliser again in early summer - see rose cultivation
Rose feed in spring and after each major flush