How to Grow ʻŌhiʻa Lehua
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ʻŌhiʻa Lehua
Metrosideros polymorpha var. tremuloides
treeʻŌhiʻa lehua is a native Hawaiian tree renowned for its striking crimson, orange, or yellow flowers and hard, dense wood. This variety (tremuloides) is characterized by trembling leaves and is an iconic species of Hawaiian forests, particularly in volcanic regions. It serves as a keystone species in Hawaiian ecosystems and holds deep cultural significance to Native Hawaiian peoples.
When should you plant ʻŌhiʻa Lehua 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 ʻŌhiʻa Lehua timeline · Pittsburgh, PA (Zone 6b)
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Plant ʻŌhiʻa Lehua
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 ʻŌhiʻa Lehua
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact ʻŌhiʻa Lehua dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 10b-11, with best performance in tropical Hawaiian conditions
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Germination & Seedling
2-4 weeksTiny seedlings emerge with cotyledons; very delicate with minimal foliage
Keep soil consistently moist but not waterlogged; provide bright, indirect light; protect from direct sun and wind; use well-draining seed-starting mix
Early Growth
3-6 monthsDevelopment of first true leaves; slow, gradual height increase; establishment of root system
Gradually acclimate to stronger light; maintain even moisture; avoid fertilizer or use dilute liquid fertilizer monthly; provide shelter from strong winds
Juvenile Vegetative
1-3 yearsSteady growth with formation of branching structure; leaves become more abundant and mature in appearance
Increase sun exposure gradually; allow some drying between waterings; light fertilization during growing season acceptable; prune to shape if desired
Pre-flowering & Flowering
Several months of flowering potential, varies annuallyTree reaches sufficient maturity to produce characteristic flowers—typically red/crimson, but may be orange or yellow; flowers appear in dense clusters
Maintain consistent care; avoid excessive nitrogen fertilization which can reduce flowering; provide full sun for best blooms; trees can flower year-round but peak in spring-summer
Fruit Development & Maturity
6-12 months to mature fruit; ongoing throughout mature lifeAfter flowering, small capsular fruits develop containing numerous tiny seeds; tree reaches substantial canopy size
Support heavy branches if needed; maintain adequate water during seed development; allow fruits to mature on tree for natural seed dispersal
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove infected trees promptly; sterilize tools; avoid moving plant material from infected areas; control beetle vectors; maintain tree health
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Keep trees healthy and vigorous; remove dead/dying branches; avoid wounding; monitor for sawdust; no effective chemical control; prevention through tree health is primary strategy
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Fencing; exclusion; native forest management protocols; not a direct pest control but ecological threat to seedlings and soil
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and
Horticultural oil spray; insecticidal soap; manual removal; encourage natural predators
Uses
Sacred Hawaiian Cultural Significance
CulturalʻŌhiʻa lehua holds profound spiritual importance in Hawaiian culture, featuring prominently in mythology, hula, and traditional practices. The flowers are traditionally used in lei and ceremonies. [source]
Traditional Timber & Woodcraft
HouseholdThe exceptionally hard, dense wood was traditionally used for kōkī (digging sticks), spear shafts, and other implements. Modern uses include fine woodworking and specialty lumber. [source]
Keystone Ecosystem Species
WildlifeʻŌhiʻa lehua is essential to Hawaiian forest ecosystems, providing nectar for native Hawaiian honeycreepers like the ʻApapane and ʻIʻiwi, and supporting diverse native fauna. [source]
Traditional Hawaiian Food Source
CulinaryWhile not commonly eaten, ʻōhiʻa flowers were occasionally used in traditional Hawaiian cuisine and beverages, and the tree provided sustenance indirectly through the birds it supported. [source]
Traditional Hawaiian Medicine
MedicinalParts of ʻōhiʻa lehua were historically used in Hawaiian healing practices (lāʻau lāpaʻau) for various ailments, though modern medicinal research is limited. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Seeds disperse naturally from mature capsules; for seed collection, harvest dry capsules before they split and store in cool, dry conditions. Seeds are extremely small and remain viable for extended periods. No traditional 'harvest' as this is a timber and ornamental/cultural species rather than a crop plant. Allow mature trees to stand for timber value or cultural/ecological purposes.
Fun Facts
- 🌱 ʻŌhiʻa lehua flowers come in multiple colors—red is most common, but orange and yellow varieties exist; there is a cultural belief that picking red flowers invites rain, reflecting the tree's association with moisture and volcanic landscapes.
- 🌱 This tree is one of the first colonizers of new lava flows in Hawaii, playing a critical role in reforesting volcanic landscapes and creating soil for other species to establish.
- 🌱 The wood is so dense and hard that it was traditionally preferred over all other Hawaiian woods for making digging implements and weapons, and it remains one of the heaviest domestic hardwoods in North America.
Gardening Terms
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