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

Rosa 'Climbing Devoniensis' · Rosa 'Climbing Devoniensis'
Grow in fertile, humus-rich, moist but well-drained soil in full sun in a warm sheltered position. 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 fertilizer every two to four weeks from spring through late summer