Agapanthus "Peter Pan"

Peter Pan Lily-of-the-Nile. This is a dwarf form with medium blue flowers and only 12" tall. As with all other Agapanthus, plant in full sun and lime annually to get consistent flowers. I often hear the claim that my Agapanthus flowered well the first year or so after. So my first question is always, "When did you last lime your plants?" One needs only to fertilize sparingly but lime regularly, which most gardeners rarely do. When one sees the results with their Agapanthus, then they will probably extend this to their other plants such as their "woodies", perennials, annuals and vegetables.  Zones 7-10