How to Grow Lehua
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Lehua
Metrosideros polymorpha
treeLehua is a native Hawaiian tree prized for its striking crimson, pink, orange, or yellow brush-like flowers that bloom in clusters. This evergreen tree is culturally significant in Hawaii and plays an important ecological role in native forests. It typically grows as a moderate-sized tree and is highly valued for ornamental, cultural, and reforestation purposes.
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Example Lehua timeline · Pittsburgh, PA (Zone 6b)
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Plant 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 Lehua
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Lehua dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 10b-11, warm tropical and subtropical climates with moderate to high humidity
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Get my Lehua timeline →Growth Stages
Seedling
3-4 monthsTiny seedlings with small oval leaves emerge from soil. Growth is slow initially.
Keep soil consistently moist; provide bright, indirect light; protect from strong wind and direct sun exposure
Juvenile
1-2 yearsYoung tree develops stronger stems and deeper root system. Foliage becomes denser with increasingly mature leaves.
Gradually increase sun exposure; water regularly during dry periods; apply balanced fertilizer monthly during growing season
Vegetative Growth
2-4 yearsTree establishes canopy structure and reaches height of 20-50 feet. Leaves are lanceolate and dark green.
Prune to shape if desired; maintain consistent watering; support with stakes if necessary in windy areas; apply mulch around base
Flowering
Blooms seasonally, often spring through summerDistinctive brush-like flower clusters appear, typically crimson but can be pink, orange, or yellow. Flowers attract native birds.
Ensure adequate sunlight and consistent moisture; reduce nitrogen fertilizer to encourage blooming; remove spent flowers to encourage repeat blooming
Fruiting & Maturity
Ongoing once tree reaches maturitySmall capsular fruits develop after flowering containing numerous tiny seeds. Tree reaches full mature size.
Minimal intervention needed; collect seeds if desired; maintain tree health with occasional pruning and mulching
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with horticultural oil or insecticidal soap; encourage natural predators; prune heavily infested branches
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Spray with water to dislodge; apply neem oil or insecticidal soap; introduce natural predators
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Maintain tree health to prevent infestation; remove and destroy infested wood; apply fungicide if secondary fungi present
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and
Ensure good air circulation; avoid overhead watering; apply sulfur dust or fungicide if severe
Uses
Ornamental Landscaping
OrnamentalLehua is prized as an ornamental tree for tropical landscapes, bringing dramatic crimson, pink, or orange flowers that attract native Hawaiian birds. The attractive evergreen foliage and striking blooms make it ideal for gardens and parks. [source]
Lei Making
CraftLehua flowers are traditionally and widely used in Hawaiian lei making, valued for their vibrant color and long-lasting quality. The flowers are sacred in Hawaiian culture and are featured prominently in cultural ceremonies and traditions. [source]
Native Pollinator Support
WildlifeLehua flowers are pollinated by native Hawaiian birds (nectarivores) including the 'i'iwi and 'apapane, making it an essential plant for supporting endangered native bird species. The nectar-rich flowers provide critical food sources in native forest ecosystems. [source]
Reforestation & Habitat Restoration
HouseholdLehua is actively used in native Hawaiian forest restoration projects to rebuild ecosystems and prevent further species loss. Planting lehua helps restore ecological balance in degraded Hawaiian landscapes. [source]
Traditional Hawaiian Medicine
MedicinalHistorically, lehua flowers and bark have been used in traditional Hawaiian healing practices (lomilomi). The plant holds spiritual and medicinal significance in Native Hawaiian culture. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Lehua is not harvested for food. For ornamental use, cut flowers when brush-like clusters are fully open but still firm. Cut 12-18 inches of branch for arrangements. Seeds are collected from mature dried capsules in late summer; extract and sow immediately or store dry in cool conditions. In Hawaiian culture, lehua flowers are traditionally gathered respectfully and used in lei-making.
Fun Facts
- 🌱 Lehua is one of Hawaii's most culturally important plants and appears in Native Hawaiian mythology and chants; it is associated with the volcano goddess Pele.
- 🌱 The lehua tree can grow at elevations from sea level up to 9,000 feet, adapting to diverse Hawaiian habitats from tropical rainforests to high-altitude volcanic slopes.
- 🌱 Lehua flowers come in a striking array of colors including crimson red, pink, coral, orange, yellow, and rare white varieties, with some trees producing flowers that change color as they age.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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