How to Fertilize damask rose?
Classic rose bloom liquid feed every three weeks growing season

damask rose · Rosa × damascena
Also known as: summer damask rose
Grow in fertile, humus-rich, moist but well-drained soil in full sun or partial shade. 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
Classic rose bloom liquid feed every three weeks growing season