How to Fertilize drooping closed African lily?
Balanced feed monthly from spring through midsummer growth

drooping closed African lily · Agapanthus inapertus subsp. pendulus
In milder areas, grow outside in moisture-retentive but well-drained soil in full sun, in a sheltered position such as a south-facing or west-facing wall, and provide winter protection with a dry mulch; in colder areas, grow in containers in loam-based compost such as John Innes No. 3, water freely when in growth but sparingly in winter, and apply a balanced liquid fertilizer monthly from spring until flowering; for more advice, see Agapanthus cultivation
Balanced feed monthly from spring through midsummer growth