How to Fertilize flowery senna?
Balanced perennial feed every four weeks from spring through summer

flowery senna · Senna corymbosa
Under glass grow in loam-based compost, in full light with shade from hot sun and moderate humidity. Water freely in summer but keep just moist in winter. During growth apply a balanced liquid fertiliser monthly. Can be grown outdoors in moderately fertile, moist but well-drained soil in full sun in a sheltered frost-free area
Balanced perennial feed every four weeks from spring through summer