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How to Care for Agapanthus After Blooming

The Agapanthus, or Lily of the Nile, is known for its clusters of purple, funnel-shaped flowers that bloom once a year, generally between late spring and early autumn. The blooms of this perennial only last a week or two, at the most, but the long, slender leaves remain green and full year-round, which is why Agapanthus is a popular landscaping flower. Agapanthus require a minimum of care, which begins at the end of each blooming cycle.

Snip flowers off at the bottom of the stalk as soon as they begin to wilt. Leaving dead flowers saps nutrients the plant could use to increase the density of its foliage.

Clear the plant of dead leaves and other debris once the flower stalks have all been removed.

Divide the underground rhizomes and root clumps with a knife and replant. Place the separated rhizomes under 1 inch of soil and 18 inches to 2 feet apart.

Water regularly, enough to keep the soil moist but not saturated, until the plant begins developing new growth -- a sign of a healthy root structure. Keep the plant well watered until the next flowering cycle.

Agapanthus Before Blooming?

Agapanthus orientalis is a subspecies of Agapanthus praecox. Mature evergreen agapanthus produce side shoots. In six to eight months you can transplant the new plants into the garden. Growing agapanthus from seed requires the most patience, as it can take years to see the first flowers from the new plants. You plant the seeds in late summer or in the fall, and they sprout in six to eight weeks. Generally agapanthus grown from seed will reach maturity and bloom in three to four years.

Tip

Agapanthus, native to South Africa, grow best in full sun, in moderately fertile soil.

Warning

Agapanthus may cause haemolytic poisoning in humans, and the sap can cause severe ulceration of the mouth.

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