Jacaranda mimosifolia

Blue Jacaranda

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Taxonomy

Family Bignoniaceae · Genus Jacaranda

Common Names

Blue JacarandaJacaranda treeBlack poui

Context

nativeRegion

South America (primarily southern Brazil, northern Argentina, Paraguay, and Bolivia).

usdaZones

9–11 (occasionally survives in protected areas of zone 8).

companionPlants

Bougainvillea, Agapanthus, Palms, Strelitzia

culturalUses

Ornamental tree prized for shade and showy flowers; used in urban landscaping worldwide; symbolic value in some cultures (e.g., associated with university graduation in Australia).

Care

Care Requirements

LightFull sun is ideal, but can tolerate light shade.

WateringModerate; prefers regular watering during active growth, but is drought-tolerant once established.

SoilPrefers well-draining soil; sandy or loamy types ideal. Avoid heavy clay.

FertilizerApply a balanced fertilizer in early spring; avoid excessive nitrogen to prevent poor flowering.

HumidityPrefers moderate humidity but adapts well to drier environments.

TemperatureBest in warm climates (20–30°C/68–86°F). Sensitive to frost; young trees may be damaged below -2°C/28°F.

Growth & Life Cycle

HabitDeciduous to semi-evergreen tree with an open, spreading crown and fern-like leaves.

Mature SizeTypically 10–15 m (33–50 ft) tall, sometimes up to 20 m (65 ft).

Growth RateModerate to fast-growing, especially when young.

BloomingSpectacular blue-purple, tubular flowers in late spring to early summer; blooms may recur in autumn in warm regions.

DormancyPartial dormancy or leaf drop in cooler/dry seasons.

Propagation

Methodsseed, semi-hardwood cuttings

DifficultyModerate; seeds germinate easily, cuttings less reliable.

Best SeasonSpring to early summer for seeds; summer for cuttings.

Maintenance & Notes

PruningPrune to shape young trees and remove lower branches; avoid severe pruning, which can cause weak growth.

RepottingNot applicable for landscape trees; container plants repot every 2–3 years.

Pests & DiseasesGenerally pest-free; susceptible to aphids, scale insects, and fungal root rot if overwatered.

ToxicityNot considered toxic to humans or pets.

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