A picture of a Agapanthus 'Big Blue'

Agapanthus 'Big Blue'

Agapanthus 'Big Blue'

Also known as

African Lily 'Big Blue', Lily of the Nile 'Big Blue'

Full Sun
Easy care
Light watering
Frost Hardy


RHS hardiness


Minimum temperature

Expected size








2 years to reach maturity


  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

More images of Agapanthus 'Big Blue'

A photo of Agapanthus 'Big Blue'
A photo of Agapanthus 'Big Blue'

Agapanthus 'Big Blue' Overview

Agapanthus 'Big Blue' is an evergreen clump forming perennial that produces striking blue star-shaped flowers that form large round heads standing 1m above lush green strappy leaves. African Lily 'Big Blue' gives a lovely summer display, looking especially stunning as part of a Mediterranean or mixed planting scheme. In areas which experience temperatures below 10C, it will happily grow in large containers that can be moved undercover during the winter months. Like the fairy tale character Goldilocks, Agapanthus like their growing space to be just so. Contra to popular wisdom, Agapanthus do not like to be overcrowded in their pots; however they also take a while to establish if planted up into too large spaces. As a rule of thumb, pot on every two years using a gritty multipurpose mix.

Common problems with Agapanthus 'Big Blue'

How to harvest Agapanthus 'Big Blue'

Seeds to be harvested in autumn when the seed pods have dried out. Flower stalks may be cut for flower arrangements during summer months.

How to propagate Agapanthus 'Big Blue'


Seeds must be sown fresh in the autumn, or if you are in an area where you receive below freezing temperatures keep the seeds cool in the fridge and sow in the spring.


Lift and divide clusters every four years in winter when the plant is dormant.

Special features of Agapanthus 'Big Blue'

Attractive flowers

Attractive clusters of trumpet-shaped flowers

Attracts useful insects

Attracts insects like bees and butterflies.

Drought resistant

This plant can withstand drought periods, as it fleshy rhizomes stores water reserves.

Pot plant

Grows well in large pots.