How to Grow Aulu Tree
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Aulu Tree
Cheirodendron trigynum
treeThe Aulu tree is a native Hawaiian forest tree that grows to 40-60 feet tall, characterized by its distinctive three-parted (trigynum) leaves and small yellowish flowers. It produces small, round fruits that were traditionally used by Native Hawaiians for food and medicine. This endemic species is important for native Hawaiian forest ecosystems and is increasingly valued for reforestation efforts.
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Example Aulu Tree timeline · Pittsburgh, PA (Zone 6b)
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Plant Aulu Tree
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Aulu Tree
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Aulu Tree dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in tropical zones 11b-12, ideally in warm, humid Hawaiian climates
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Get my Aulu Tree timeline →Growth Stages
Germination & Seedling
4-8 weeksSeeds germinate within 2-4 weeks; seedlings develop simple leaves and establish a primary root system. Growth is relatively slow in early stages.
Maintain consistent moisture and warmth. Provide bright, indirect light. Protect from direct harsh sun and strong winds. Use well-draining seed-starting medium.
Juvenile Growth
1-3 yearsYoung tree develops the characteristic trigynum (three-parted) leaf structure and gradually increases in height and branching. Growth remains moderate.
Stake for support in windy locations. Maintain regular watering. Begin light fertilization with balanced NPK or native tree fertilizer. Prune competing leaders if needed.
Vegetative Development
3-10 yearsTree establishes substantial canopy structure with prominent branching. Stems thicken and bark develops characteristic coloring. Height increases steadily.
Continue consistent moisture and fertility. Prune lightly to shape if desired. Monitor for pests and diseases common to Hawaiian forests. Reduce staking support as trunk strengthens.
Flowering & Fruiting
Seasonal; fruits ripen over several weeksTree produces small yellowish flower clusters followed by round, small fruits. May not flower until 8-15+ years old depending on growing conditions.
Maintain good water consistency during flowering season. No special fertilization needed for flowering. Monitor fruit development; allow natural fruit drop.
Mature Canopy
10+ years (ongoing)Fully established tree reaching 40-60 feet, with dense canopy and regular flowering/fruiting cycles. Contributes significantly to forest structure.
Minimal intervention needed. Maintain natural form. Monitor for storm damage. Can live for 100+ years with proper conditions.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Not a pest; this endemic bat uses Aulu trees for roosting. Protect and maintain trees for bat habitat support.
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Monitor for cottony cushion scale and black scale. Spray with neem oil or horticultural oil in early morning or late evening. Encourage natural predators like ladybugs.
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Watch for spider mites in dry conditions. Increase humidity and mist foliage. Use miticides if severe, or spray with water forcefully.
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Ensure good drainage and air circulation. Remove affected branches. Avoid overhead watering if possible. Apply fungicide if leaf spot or canker appears.
Uses
Traditional Hawaiian Food
CulinaryThe small fruits (called 'aulu in Hawaiian) were eaten by Native Hawaiians and are still used in traditional island cuisine, either raw, cooked, or dried. The flavor is mild and slightly sweet. [source]
Traditional Hawaiian Medicine
MedicinalTraditionally used in Hawaiian healing practices for various ailments. Different plant parts were prepared as remedies by Native Hawaiian healers. [source]
Native Forest Restoration
EcologicalCritical native species for reforestation and restoration of Hawaiian mesic and wet forests. Provides canopy structure, habitat, and food sources for native Hawaiian wildlife including birds and insects. [source]
Endemic Species Support
WildlifeProvides roost sites for the endangered Hawaiian hoary bat (ope'ape'a) and food sources for native forest birds and insects, contributing to ecosystem biodiversity. [source]
Ornamental Canopy Tree
HouseholdBeautiful native tree valued for landscaping in Hawaiian properties and botanical gardens, providing tropical shade and authentic island aesthetic. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Fruits can be harvested when fully mature and ripe (turning from green to darker color). They are quite small (about 0.5 inches). Harvest by hand when fruits naturally separate or gently pull. Fruits are best used fresh or processed shortly after harvest, as they do not store well. Traditional Hawaiian preparation involved cooking or drying the fruits.
Fun Facts
- 🌱 The name 'trigynum' refers to the distinctive three-part (trilobate) leaf structure characteristic of this species, which distinguishes it from related species.
- 🌱 Cheirodendron trigynum is endemic to Hawaii, found nowhere else in the world, and represents a unique evolutionary lineage within the aralia family (Araliaceae).
- 🌱 The tree is a keystone species in Hawaiian native forests, its presence supporting entire ecological communities including the endangered Hawaiian hoary bat and multiple endemic bird species.
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