How to Grow Aeonium

Aeonium arboreum

Perennial

Aeoniums are architectural succulents with dramatic rosettes on woody stems. They are winter-growers — active from autumn to spring, dormant in hot summer. In the UK, grow outdoors in full sun from May to October, then bring inside to a bright, cool spot (5-12°C) before frost. Plant in very free-draining, gritty compost. Water sparingly in summer (dormant), more regularly in winter (growing). Feed monthly at half-strength during the active season. Propagate easily from stem cuttings left to callus for a few days.

Yearly Lifecycle

JanFebMarAprMayJunJulAugSepOctNovDec

Spring Growth Flowering Winter Dormancy

Care Essentials

Feed monthly with a half-strength balanced liquid fertiliser during the active growing season (autumn to spring). Do not feed in summer when dormant.

Watch For

Mealybugs
Aphids
Root rot from overwatering
Etiolation from insufficient light

Companions

Echeveria, Sempervivum, Agave, Senecio

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Care Requirements

☀️ Light

Full sun; bright windowsill indoors

Full sun is essential for compact growth and good colour, especially for dark-leaved varieties. In shade, rosettes stretch and lose colour intensity. Indoors, place on the brightest windowsill available (south-facing ideal).

💧 Watering

Sparingly in summer; regularly in winter growing season

Water sparingly in summer when dormant — just enough to prevent shrivelling. In the active season (autumn to spring), water when the top 2 cm of compost is dry. Never let pots sit in water. Very free-draining compost is essential.

🌱 Fertilizing

Monthly half-strength feed October to April only

Feed monthly with a half-strength balanced liquid fertiliser from October to April. Do not feed in summer dormancy. Overfeeding causes soft, leggy growth.

Growing Tips

Winter growers

Aeoniums grow actively from autumn to spring and go dormant in hot summer. Reduce watering in summer but do not stop completely — they still need occasional moisture.

Bright light for colour

Dark-leaved varieties like Zwartkop need full sun to maintain their deep purple-black colour. In shade they revert to green.

Monocarpic rosettes

Individual rosettes die after flowering but the plant survives through offsets. Remove dead rosettes and let the offsets fill the space.

Pests & Diseases

Pest Mealybug

Identification: White cottony masses in leaf axils and between rosette leaves; sticky honeydew

Organic treatment:

Dab with cotton bud dipped in methylated spirits
Spray with neem oil solution

Chemical treatment:

Systemic insecticide drench

Pest Aphids

Identification: Clusters of small green or black insects on flower stems and young growth

Organic treatment:

Blast off with water spray
Encourage ladybirds and lacewings

Chemical treatment:

Contact insecticide spray

Disease Root Rot

Symptoms: Soft, mushy stem base; rosettes dropping leaves; foul smell from compost

Treatment: Remove from pot, cut away all rotten tissue, allow to dry for several days, repot in fresh gritty compost

Prevention: Use very free-draining compost; never overwater; ensure pots have drainage holes

Popular Varieties

Zwartkop

The most popular dark-leaved aeonium with dramatic near-black rosettes that intensify in full sun. Stems branch freely to create a striking architectural specimen.

Kiwi

A compact tricolour variety with rosettes edged in red, cream, and green. Smaller and more branching than the species, ideal for mixed succulent containers.

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