How to Fertilize Phlox paniculata 'Herbstwalzer'?
Balanced phlox perennial feed every three weeks spring to autumn

Phlox paniculata 'Herbstwalzer' · Phlox paniculata 'Herbstwalzer'
Thrives in any fertile, humus rich, moist soil in full sun or part shade. Plants will benefit from good air circulation and from watering in extended dry spells. Water at the base if necessary, rather than over the leaves
Balanced phlox perennial feed every three weeks spring to autumn