I planted Agapanthus (Lily of the Nile) last year this time....I bought 5 gal. size and divided each one at least 2 times. They have set roots well and have grown sufficiently since, but look rather washed out. I've fed regularly with Miracle grow. My soil is clay, but I amended greatly when planting. Any ideas why these plants aren't nice and green. Should I give them iron?