How to Fertilize Rosa spinosissima 'Ormiston Roy'?
Rose bloom fertilizer every two to four weeks spring through late summer

Rosa spinosissima 'Ormiston Roy' · Rosa spinosissima 'Ormiston Roy'
Grow in fertile, humus-rich, well-drained soil in full sun. 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. Ideal for poor sandy soil and low hedging. See rose cultivation for further advice
Rose bloom fertilizer every two to four weeks spring through late summer