Raukaua simplex
Raukaua simplex
Simple-leaved raukawa
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Taxonomy
Family Araliaceae · Genus Raukaua
Description
Raukaua simplex is a graceful New Zealand evergreen with simple, glossy leaves and a naturally tidy, bushy form. It thrives in bright shade and mild, moist conditions, making it a lovely choice for native or woodland-style gardens.
Common Names
Simple-leaved raukawaRaukaua
Context
nativeRegion
Aotearoa New Zealand, lowland to montane forests.
usdaZones
8-10
companionPlants
Pseudopanax arboreus (Five-finger), Griselinia littoralis, Coprosma species, Pittosporum tenuifolium, Veronica (Hebe) species, Blechnum and Asplenium ferns, Cyathea tree ferns
culturalUses
Used in native revegetation, shelter and understory plantings; supports habitat and provides food for birds and insects.
Care
Care Requirements
LightBright shade to dappled light; tolerates morning sun but avoid harsh afternoon sun.
WateringKeep evenly moist, especially in the first 1–2 years. Let the top inch of soil dry slightly between waterings; do not allow waterlogging.
SoilRich, well-drained, humus-heavy mix; slightly acidic to neutral (pH 6.0–7.0).
FertilizerLight feeding in spring with a balanced, slow-release fertilizer or organic compost; avoid heavy nitrogen.
HumidityPrefers moderate to high humidity; benefits from mulching to maintain even moisture.
TemperatureBest in mild climates; tolerates light frosts. Approx. USDA 8–10 (about 15–30°F minimum when established).
Growth & Life Cycle
HabitEvergreen shrub to small tree with upright, branching form and simple elliptic leaves.
Mature Size2–5 m tall, 1.5–3 m wide in cultivation.
Growth RateModerate growth rate.
BloomingSmall, greenish to creamy umbels in late spring to early summer; followed by bird-attracting berries.
DormancyEvergreen; no true dormancy, but growth slows in cooler months.
Propagation
MethodsSemi-hardwood cuttings, Seed
DifficultyModerate
Best SeasonCuttings in late spring to summer; sow fresh seed in autumn or spring.
Maintenance & Notes
PruningMinimal; lightly thin or shape after flowering. Remove dead or crossing wood to maintain structure.
RepottingIf container-grown, repot every 2–3 years in spring into a fresh, free-draining, humus-rich mix.
Pests & DiseasesGenerally resilient; watch for scale, mealybugs, and aphids. Ensure drainage to prevent root rot or Phytophthora in overly wet soils.
ToxicityNo well-documented toxicity to people or pets; as with ornamentals, discourage ingestion.
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