Plant bare root divisions in the spring when the threat of a heavy freeze is past. The crown should be planted one inch below the soil surface in a loamy, moisture retaining soil that drains well.
Light: African lily benefits strongly from a full-sun position. It can tolerate part shade positions, but blooming is lessened and flowers may reach toward available light.
Soil: African lily does fine in average soil as long as it is well-draining, but amending your average soil is a better idea. Adding organic amendments such as compost or leaf mold will help keep soil moist but not wet, add nutrients, and allow the plant to thrive.
Dry soils during the growing season might be tolerated, but are not recommended and will affect flowering. Constantly wet soils will kill the plant.
Spacing: Space 18-24” apart.
In warmer climates, agapanthus clumps will spread and will need dividing in time. In cooler climates where agapanthus is overwintered indoors, growth happens much more slowly.
Planting: Plant in spring when danger of a hard freeze is past.
How to Grow African Lily Throughout the Season
Growith Habit: African lily is a clump-forming plant with long, glossy, strap-like leaves reaching a height of 2-3’, with a spread of 18-24”. Blue flowers appear in mid to late summer and are held above the foliage at the end of long, sturdy stems. These flowers are arranged in an open, globular pattern much like an ornamental allium, but without the density, allowing the gardener (and pollinators) to appreciate the trumpet shapes of individual flowers.
Staking: Staking is not necessary unless light levels are low and flowers are forced to reach.