How to Grow Ohia Palai
Ohia Palai
Metrosideros polymorpha
treeOhia Palai is a native Hawaiian tree known for its vibrant crimson, orange, pink, or yellow flower clusters that attract native birds. This hardy, multipurpose tree grows throughout Hawaii's diverse ecosystems and is culturally significant to Hawaiian traditions. It adapts well to various elevations and soil conditions, making it valuable for reforestation and ornamental purposes.
When should you plant Ohia Palai in your zone?
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Example Ohia Palai timeline · Pittsburgh, PA (Zone 6b)
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Plant Ohia Palai
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 Ohia Palai
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Ohia Palai dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in USDA zones 10b-12, particularly suited to Hawaii and warm tropical regions
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Germination & Seedling
2-4 weeksSeeds germinate in 1-2 weeks with consistent moisture. Seedlings develop first true leaves and establish initial root system.
Keep soil consistently moist but not waterlogged. Provide filtered light. Maintain warm temperatures (70-80°F).
Vegetative Growth
1-3 yearsTree develops sturdy stems, glossy oval to oblong leaves, and established branching structure. Foliage ranges from dark green to reddish.
Water regularly during dry periods. Mulch around base. Prune to develop desired shape. Fertilize monthly with balanced or slow-release fertilizer.
Flowering Preparation
1-2 yearsTree reaches sufficient maturity (typically 3-5 years). Flower buds begin forming at branch tips.
Reduce nitrogen fertilizer to encourage blooming. Maintain consistent watering. Prune selectively to improve air circulation.
Flowering & Fruiting
2-4 months flowering; fruit matures over several monthsDistinctive brush-like flowers in red, orange, pink, or yellow appear at branch tips. Flowers attract native honeycreepers. Small capsule fruit develops after flowering.
Avoid heavy pruning during blooming. Maintain regular watering. Monitor for pests attracted to flowers.
Maturity & Maintenance
Indefinite; can live 200+ yearsEstablished tree reaches 20-40 feet height, develops dense canopy, produces abundant flowers annually. Tree becomes drought-tolerant and requires minimal care.
Prune to maintain shape and remove diseased branches. Water during extended dry periods. Minimal fertilization needed once mature.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with horticultural oil or neem oil; encourage natural predators; prune heavily infested branches
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Spray with water to dislodge; use insecticidal soap; introduce ladybugs and parasitic wasps
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Hand-pick where feasible; use neem oil spray; maintain tree vigor to reduce damage
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Plant rust-resistant varieties when available; improve air circulation; remove infected leaves; avoid overhead watering
Uses
Lei-Making & Flower Arrangements
CulturalThe spectacular brush-like flower clusters are highly prized for traditional Hawaiian lei and modern floral arrangements. The long-lasting blooms symbolize beauty and resilience in Hawaiian culture. [source]
Reforestation & Habitat Restoration
HouseholdOhia Palai is essential for native forest restoration and reforestation projects throughout Hawaii. It stabilizes slopes, prevents erosion, and provides crucial habitat for native Hawaiian forest birds and insects. [source]
Traditional Hawaiian Medicine
MedicinalIn Hawaiian traditional medicine (lomilomi), various parts of the ohia tree have been used to support respiratory health and general wellness. Modern research continues to explore bioactive compounds in the bark and leaves. [source]
Wood for Carving & Craft
CraftOhia wood is traditionally used for Hawaiian knitwear implements, tools, and ceremonial objects. The dense, durable heartwood has been valued for wooden bowls (ipu) and handles since ancient times. [source]
Native Bird & Pollinator Support
WildlifeThe flowers are a primary nectar source for endangered Hawaiian honeycreepers (notably the 'I'iwi). The tree provides essential food resources and nesting sites for native forest birds. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Ohia Palai is not typically harvested for food. For cultural/craft uses: collect flowers when fully opened for lei-making or fresh arrangements (they last 5-7 days). Seeds can be collected from mature capsules in late summer/fall for propagation. Harvest wood from mature trees for traditional carving or timber uses (requires proper permits in Hawaii).
Fun Facts
- 🌱 Ohia Palai was revered in ancient Hawaiian culture and is the national tree of Hawaii; it appears in Hawaiian mythology and traditional chants (mele).
- 🌱 The tree's name 'ohia' derives from Hawaiian roots meaning 'hardy' or 'tough,' reflecting its ability to grow in harsh volcanic landscapes and poor soils.
- 🌱 Ohia Palai can live for over 200 years and was historically used to build canoes, tools, and structures due to its strong, decay-resistant wood.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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