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Agapanthus · African lilies

Agapanthus · African lilies

Agapanthus spp. & Gartenhybriden

Balcony Garden Sun PerennialMedium

For your Agapanthus · African lilies

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Profile

Plant group
African lilies · Perennials
Growth & habit
Clump-forming perennial with fleshy roots, basal foliage and upright flower stalks.
Foliage
Strap-shaped leaves; evergreen or fully deciduous in autumn depending on species and cultivar.
Family
Amaryllis family · Amaryllidaceae
Origin
Southern Africa; garden hybrids derived from several species
Height
Around 20–150 cm including flower stalks, depending on cultivar
Bloom
Usually June–September; blue, violet or white
Toxicity
Do not eat. Sap may irritate; wear gloves when dividing.

Care calendar

Leaf emergence

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

New leaves emerge as temperatures rise; deciduous forms restart from the overwintered crown.

Flowering / flower development

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Main flowering is usually in summer, with timing affected by early or late cultivars and weather.

Leaf fall

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Deciduous forms yellow and lose their foliage; evergreen types retain healthy leaves.

Pruning & growth habit

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Remove dead leaves and spent stalks selectively; do not routinely cut back healthy evergreen foliage.

Guidance for Germany and Central Europe. Position, weather, species and cultivar shift these windows; indoor and container plants also depend on their winter conditions.

Your seasonal care plan

  • Check compost moisture

    Mar · Apr · May · Jun · Jul · Aug · Sep

    During growth, water thoroughly when needed and allow drainage. Avoid prolonged complete drying in containers.

  • Supplement nutrition

    Apr · May · Jun · Jul · Aug · Sep

    Follow the stated dilution and account for initial fertiliser. Do not feed automatically during dormancy.

    View product dosage and application →

  • Repot when needed

    Mar · Apr · May

    Choose a slightly larger container only when needed, keep drainage holes clear and maintain planting depth.

    View product dosage and application →

  • Match winter care to the form

    Oct · Nov · Dec · Jan · Feb · Mar

    Protect evergreen plants from frost in bright, cool conditions. Keep deciduous cultivars drier and consider their specific hardiness.

Highlighted months are guidance, not fixed dates. Observe the plant, root ball and weather; water, feed and repot according to actual need.

Seasonal care intensity

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Seasonal guidance for Germany. Needs depend on location, weather and species. Check moisture in winter too; these markers are not a feeding schedule.

Peak care Active Reduced care

Care tips

  • Calendar for Central Europe; cultivar, weather and winter conditions affect timing.
  • Distinguish evergreen and deciduous forms.
  • Light, winter care and root space influence flowering.

Fruit & harvest

Fruit and seed formation

After flowering, conspicuous seed heads may develop and later dry. These add another structural stage after the rounded flower display in late summer and autumn.

Harvest and use

Not a food crop. Leave selected heads for decoration or seed collection. Seedlings vary; divide suitable older clumps to propagate a named cultivar with its characteristics retained.

Plant knowledge at a glance

Position, benefits & character

Position & soil

A sunny, sheltered position with a freely draining root zone. Containers must allow excess water to escape. Assess winter hardiness for the specific cultivar.

Distinctive features

Numerous small funnel flowers form blue, violet or white globes. Flowerheads rise above the foliage and make a striking individual container display.

Benefits

As a movable container plant, agapanthus brings summer colour to seating areas. Flowers attract visiting insects; the plant is not grown as food.

Partners & symbioses

Pollinating insects visit the flowers. This does not imply that special microorganisms must be added to the compost.

Pruning & growth habit

Common garden hybrids cannot be identified to species by flower colour alone. Evergreen and deciduous forms need different winter care. Agapanthus is neither a woody plant nor a true lily of the genus Lilium.

  1. 1. Identify the form

    Check whether your cultivar is evergreen or deciduous. Remove only clearly dead leaves.

  2. 2. Remove spent stalks

    Cut spent stalks near the base if seed is not wanted. Avoid cutting into the leaf bases.

  3. 3. Check crown and roots

    Repot or divide in spring if seriously crowded. Small, frequently divided plants may flower less for a while.

Nursery forms

This overview explains nursery supply forms. It does not indicate current availability in the GREEN24 shop.

Bare-root

Ask a specialist nursery

Loose rhizomes should be fresh and healthy; prevent drying.

Root-balled

Ask a specialist nursery

Traditional nursery root-balled stock is unusual for this perennial.

Container-grown

Common form

Common: rooted plants in nursery pots or large containers.

Young plant

Common form

Young plants need time to form vigorous flowering clumps.

Shrub

Not typical for this profile

Not a shrub; agapanthus is herbaceous.

Feathered tree

Not typical for this profile

Nursery multi-stem tree forms do not apply.

Half-standard

Not typical for this profile

Not supplied as a half-standard tree.

Standard

Not typical for this profile

Not a standard tree; flower stalks are not woody trunks.

Topiary

Not typical for this profile

Woody topiary forms do not apply to agapanthus.

Propagation & grafting

Propagation

Divide vigorous clumps in spring. Each division needs several healthy shoots and roots. Seed propagation is possible, but cultivar traits may vary and flowering takes patience.

Grafting

Agapanthus are not grafted like fruit trees. Cultivars are propagated vegetatively by division or through professional production methods.

Species & cultivars

Agapanthus praecox

Evergreen species and an important parent of many garden forms.

Agapanthus campanulatus

Deciduous species; assess winter protection and cold tolerance by origin and cultivar.

Agapanthus ‘Northern Star’

Blue-flowered garden cultivar with deciduous foliage; protect containers in winter.

Pests & diseases

These signs support an initial assessment. Different causes may look alike; choose a treatment only after identifying the problem.

Slugs and snails

Inspect young leaves for feeding damage and check hiding places around pots.

Root-zone rot

Soft brown roots and persistently wet compost call for checking drainage and watering.

Failure to flower

Check light, winter conditions, drought stress and root space. Stronger feed is not a reliable solution.

Hardiness · USDA

Species-dependent

Deciduous and evergreen agapanthus differ considerably. Overwinter evergreen forms frost-free; assess hardiness and protection from winter wet for deciduous cultivars. One zone for the whole group would not be meaningful.

USDA zones describe long-term average winter extremes. Containers, young plants, wet soil, wind and late frost need separate consideration.

Understand USDA zones and maps →

A closer look

Seeds and opened capsules

Seeds and opened capsules

Dried Agapanthus praecox fruiting head with opened capsules and black seeds. Botanical collection specimen with scale.

Roger Culos · CC BY-SA 3.0 · Image source

Botanical features vary with age, species and cultivar.

Matching GREEN24 products

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