How to Fertilize burr rose?
Organic rose fertilizer top dress once per early spring season

burr rose · Rosa roxburghii
Also known as: chestnut rose; Chinquapin rose
Grow in fertile, humus-rich, moist but well-drained soil in full sun or part shade, Suited to edge of woodland planting. 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
Organic rose fertilizer top dress once per early spring season