Why do my Black Panther Agapanthus not flower? They have been in big tubs for over 10 years., seldom flower.
01 August 2014, 05:43AM
How disappointing that your agapanthus have not flowered over such a long period of time. I am sure you would have them growing in plenty of sun. If they are in the shade, this can be a reason for them not flowering. Maybe it is time to divide them up and see if this may force them into flowering. Water them in with some seaweed solution and when they have settled in and are growing strongly, ferilise with a fertiliser that is high in potassium such as Thrive Soluble Flower & Fruit. Hopefully they will reward you with some stunning flowers.