Elaeocarpus rugosus
Elaeocarpus rugosus
Ceylon olive
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Taxonomy
Family Elaeocarpaceae · Genus Elaeocarpus
Common Names
Ceylon oliveRough-leaved Elaeocarpus
Context
nativeRegion
Southern Asia, especially the Indian subcontinent and Sri Lanka; commonly found in montane rainforests.
usdaZones
USDA Zones 10–12, suitable for subtropical and tropical climates.
companionPlants
Rhododendron species, Tree ferns, Camellia japonica
culturalUses
Used in reforestation and for its ornamental value; related species in the genus Elaeocarpus are revered in some cultural and religious traditions, but E. rugosus itself is primarily valued in ecological and horticultural contexts.
Care
Care Requirements
LightPrefers partial shade to full sun; thrives under filtered light in its native forest habitat.
WateringRequires consistently moist soil, but good drainage is crucial to prevent root rot.
SoilWell-draining acidic to neutral soil, rich in organic matter.
FertilizerApply a balanced, slow-release fertilizer during the growing season for optimal growth.
HumidityBenefits from moderate to high humidity, mimicking its subtropical to tropical origins.
TemperatureBest grown in warm temperatures, generally not frost-hardy (ideal above 10°C/50°F).
Growth & Life Cycle
HabitEvergreen tree, often pyramid-shaped when young, later becoming more rounded.
Mature SizeCan reach 10–20 meters in height in suitable conditions.
Growth RateModerate to slow growth rate.
BloomingProduces small white to cream-colored flowers in clusters, typically appearing in spring to summer.
DormancyNo prominent dormancy; maintains foliage year-round.
Propagation
MethodsSeed, Cuttings
DifficultyModerate; seeds may require scarification and can be slow to germinate.
Best SeasonSpring to early summer is optimal for both seed sowing and taking cuttings.
Maintenance & Notes
PruningPrune lightly to remove dead or congested branches and to maintain shape.
RepottingYoung plants should be repotted every 2-3 years; mature trees require less frequent repotting.
Pests & DiseasesGenerally resilient, but can be susceptible to root rot in poorly drained soils; occasional scale insects or leaf spots.
ToxicityNo known toxicity to humans or pets.
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