Aeonium arboreum
Aeonium arboreum
Tree Aeonium
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Taxonomy
Family Crassulaceae · Genus Aeonium
Description
Aeonium arboreum is a sculptural succulent shrub with glossy rosettes perched on branching, tree-like stems. It thrives in bright light, stays neat in containers, and brings bold texture to xeriscapes with minimal fuss.
Common Names
Tree AeoniumTree HouseleekIrish Rose
Context
nativeRegion
Canary Islands
usdaZones
9b-11
companionPlants
Echeveria, Crassula ovata, Sedum, Curio repens (Senecio serpens), Aloe, Agave attenuata, Kalanchoe luciae
culturalUses
Popular in xeriscaping, coastal and Mediterranean-style gardens, container displays, and as an architectural accent plant.
Care
Care Requirements
LightBright light to full sun; provide afternoon shade in very hot, inland climates to prevent leaf scorch.
WateringWater moderately during active growth (fall–spring); allow top 1–2 inches of soil to dry. Water sparingly in summer dormancy.
SoilFast-draining cactus/succulent mix with added perlite or pumice; avoid water-retentive soils.
FertilizerDiluted balanced cactus fertilizer (1/4–1/2 strength) once monthly in active growth; none in summer dormancy.
HumidityLow to average household humidity; ensure good airflow to prevent rot.
TemperatureBest 50–75°F (10–24°C). Protect from frost; avoid sustained temps below 35–40°F (1–4°C).
Growth & Life Cycle
HabitWoody, branching succulent with terminal rosettes; forms a small shrub.
Mature Size2–5 ft tall and 2–3 ft wide, depending on conditions and age.
Growth RateModerate, faster in cool-season growth.
BloomingLate winter to spring; tall panicles of small, starry yellow flowers. Individual rosettes are monocarpic and die after flowering, but offsets continue the plant.
DormancySummer semi-dormant; growth resumes in cooler seasons.
Propagation
MethodsStem cuttings, Offsets, Seeds
DifficultyEasy by cuttings; moderate by seed.
Best SeasonLate winter to spring (also early fall in mild climates).
Maintenance & Notes
PruningPinch or cut back leggy stems to shape and encourage branching; remove spent flower rosettes.
RepottingEvery 2–3 years in late winter to spring, or when rootbound; refresh with gritty mix.
Pests & DiseasesWatch for mealybugs, aphids (especially on blooms), scale, and spider mites; avoid overwatering to prevent root/stem rot.
ToxicityGenerally considered non-toxic to people and pets.