Posted: 26/03/2017 at 13:11
I have mine in a bowl shaped terracotta container 17" diameter 8" deep. I planted 3 agapanthus Sky Rocket in there three or four years ago and they've grown, multiplied and flowered beautifully each summer.
I used a mix of half and JI No 3 loam-based compost and MPC, with a few handfuls of added horticultural grit and I've not renewed the compost yet ........ I might do so early next spring, if I get out into the garden before they start into growth ... I was too late this spring.