Madgran77
Agapanthus are not evergreen but beautiful throughout the summer especially the blue ones. And you can plant bulbs round the edge for a spring display whilst the agapanthus rests and then the leaves appear again in the spring.
I have some pots of Agapanthus, some of which I grew from seed. I love them. The giant ones are a show stopper! They are just bursting into flower. I protect them over winter so the leaves remain.
I saw some beautiful hot pink Alstromeria in the village this afternoon and looked them up. They flower all summer until the frosts. Some die down in winter, others don't apparently. I will keep them in mind.