Very big Agapanthus

We first saw these flowers while on holiday in the Algarve and thought they looked quite stunning.
The first ones we saw were blue in colour, but a couple of years ago I sent for a collection of Perennials for a border in the garden and this Agapanthus was included.We also got a couple of blue ones, but this one stood out because of it's sheer size. I don't remember putting much fertiliser down either, but it has performed well for us. So my blip today A very big Agapanthus.