Polyscias scutellaria

Shield aralia

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Taxonomy

Common Names

Shield araliaPlatter leaf araliaBalfour aralia

Context

nativeRegion

Moluccas (Maluku Islands), Indonesia, and other Indo-Pacific islands.

usdaZones

10–12

companionPlants

Other tropical Araliaceae (like Schefflera), Ferns, Calatheas

culturalUses

Traditionally used as a medicinal plant and as a culinary herb (sometimes called ‘shield aralia’); grown ornamentally worldwide.

Care

LightBright, indirect light is preferred; tolerates some shade but will grow leggy in low light.

WateringWater when the top inch of soil dries out. Keep evenly moist but do not allow to sit in water.

SoilWell-draining, fertile potting mix with organic matter. Avoid heavy or compacted soils.

FertilizerApply a balanced liquid fertilizer monthly during the growing season (spring-summer); reduce in fall and winter.

HumidityModerately high humidity is ideal; mist leaves regularly or use a humidifier if air is dry.

TemperatureThrives in 18–27°C (65–80°F); sensitive to cold, do not expose to temperatures below 15°C (59°F).

HabitEvergreen shrub or small tree with a bushy, upright habit; often grown for its foliage.

Mature Size1–2 meters (3–6 feet) tall indoors; can grow taller in optimal outdoor tropical conditions.

Growth RateModerate, faster with optimal warmth and humidity.

BloomingInfrequent indoors; small, greenish-white flowers may appear in mature outdoor plants.

DormancyNo true dormancy; slight slowdown in growth during cooler months.

MethodsStem cuttings

DifficultyModerate (requires warm temperatures and humidity for best success)

Best SeasonSpring to early summer

PruningPrune to shape and encourage branching, remove dead or yellowing leaves as needed.

RepottingRepot every 2–3 years or when root-bound, preferably in spring.

Pests & DiseasesMay be susceptible to spider mites, scale, mealybugs, and root rot if overwatered.

ToxicityMildly toxic if ingested; keep away from pets and small children.

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