How to Fertilize Madagascar butterfly bush?
Balanced perennial feed every four weeks spring through summer growth

Madagascar butterfly bush · Buddleja madagascariensis
Under glass grow in a well-drained loam based compost (JI No. 3) in full light and with good ventilation. Water freely when in growth but more sparingly in winter. See buddleja cultivation for more detailed advice
Balanced perennial feed every four weeks spring through summer growth