How to Grow ʻAuhuhu
iNaturalist
ʻAuhuhu
Charpentiera obovata
treeʻAuhuhu is a rare endemic Hawaiian tree native to the windward slopes of the Hawaiian Islands. It grows as a small to medium-sized tree with distinctive obovate (inverted egg-shaped) leaves and produces small, inconspicuous flowers followed by colorful drupes. Historically important to Native Hawaiians for its wood and other uses, it is now considered threatened and of conservation interest.
When should you plant ʻAuhuhu in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example ʻAuhuhu timeline · Pittsburgh, PA (Zone 6b)
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Plant ʻAuhuhu
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 ʻAuhuhu
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact ʻAuhuhu dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in tropical zones 10b-12b; best suited to Hawaii and warm tropical climates
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Get my ʻAuhuhu timeline →Growth Stages
Seedling
4-8 weeksYoung plants with 2-4 true leaves; stems tender and pale green
Maintain high humidity and consistent moisture. Provide bright, indirect light. Protect from direct sun and wind.
Juvenile
6-12 monthsGrowing stem with progressive development of characteristic obovate leaves; plant reaches 1-3 feet tall
Gradually acclimate to outdoor conditions if container-grown. Maintain consistent watering and apply light fertilization monthly during growing season.
Established
12-24 monthsYoung tree 3-8 feet tall with full canopy of obovate leaves; branch structure developing
Minimal fertilization needed; reduce watering frequency as tree establishes. Prune to shape if desired. Continue to provide afternoon shade in hot climates.
Flowering
Several monthsSmall, inconspicuous greenish or white flowers appear in clusters along branches; occurs on mature trees 3+ years old
Ensure adequate nutrients and consistent water during bloom period. Flowers are small and easily overlooked.
Fruiting & Maturity
Ongoing after maturityColorful drupes (small stone fruits) develop in various colors; tree reaches 15-25+ feet tall at full maturity
Maintain regular watering during fruiting period. Fruits attract native birds and wildlife. No special treatment needed; allow natural development.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Monitor regularly; remove by hand on young trees or spray horticultural oil in early morning or late evening
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Inspect leaf axils and new growth; treat with insecticidal soap or neem oil; ensure good air circulation
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Use reflective mulches to deter; spray with strong water stream or apply insecticidal soap
Uses
Native Bird & Pollinator Support
WildlifeThe flowers and fruits of ʻAuhuhu provide food sources for Hawaiian native birds and insects. The tree supports the recovery of endangered avifauna in its native range. [source]
Traditional Hawaiian Wood
CraftHistorically, ʻAuhuhu wood was valued by Native Hawaiians for construction and tool-making. Today, the tree is grown primarily for cultural restoration and conservation rather than timber harvesting. [source]
Ornamental Landscape Tree
HouseholdIts distinctive foliage, manageable size, and tropical appearance make it attractive for Hawaiian-themed gardens, native plant landscapes, and conservation restoration projects. [source]
Traditional Hawaiian Medicine
MedicinalʻAuhuhu has been used in traditional Hawaiian healing practices, though modern applications are limited. Interested growers should research proper preparation and consult cultural experts. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
ʻAuhuhu is primarily grown for ornamental and ecological value rather than harvest. Mature fruits can be collected for propagation once they ripen (typically change color and become soft). Allow fruits to fully ripen on tree before collection. Seeds can be extracted, cleaned, and dried for storage or immediate sowing. Historically, the wood was harvested, but propagation of native stock is now preferred for conservation.
Fun Facts
- 🌱 ʻAuhuhu is endemic to Hawaii, found naturally only on windward slopes of the main islands where it thrives in moist forest conditions.
- 🌱 The name ʻAuhuhu (also spelled auhuhu) is purely Hawaiian and reflects the deep cultural and botanical heritage of the Islands.
- 🌱 This species is of significant conservation interest and is included in native plant restoration efforts throughout Hawaii to restore native forest ecosystems and support endangered Hawaiian birds.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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