How to Grow Mamane

iNaturalist

Mamane

Sophora chrysophylla

tree

Mamane is a native Hawaiian tree endemic to the islands, characterized by bright yellow, pea-like flowers and pinnate foliage. This drought-tolerant legume is culturally significant in Hawaii and serves as an important food source for native birds, particularly the endangered Hawaiian honeycreepers. The tree produces long seed pods and can reach heights of 25-35 feet in its native habitat.

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Example Mamane timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Mamane

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Mamane

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Mamane dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 8+ hours daily; critical for flowering and growth
💧
Water: Drought-tolerant once established; water regularly during establishment (6-12 months); minimal water needed in mature trees; avoid waterlogging
📏
Spacing: 300 inches
📅
Days to maturity: 3-5 years to first flowering; 5-7 years for significant seed production
🌱
Planting depth: Plant seeds 0.5-1 inch deep; transplant seedlings with root ball intact

Soil

Type: Well-draining volcanic or sandy loam soil
pH: 6.0-7.5
Amendments:
Compost Perlite or pumice for drainage Organic matter

Growing Zones

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Thrives in warm tropical and subtropical zones 10b-12, requires frost-free conditions

10b 11a 11b 12a 12b

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Growth Stages

1

Seedling

3-6 months

Small plants with simple pinnate leaves emerging; delicate growth phase lasting 3-6 months

Keep soil consistently moist but not waterlogged; provide dappled light initially; protect from strong winds; ensure good drainage to prevent damping off

2

Juvenile Growth

1-2 years

Young tree developing woody stem and branching structure; compound leaves becoming more robust; height reaches 3-8 feet

Gradually increase sun exposure; begin light pruning to shape structure; continue regular watering during dry periods; stake if in windy location

3

Mature Vegetative

Ongoing once reached

Established tree with full canopy, reaching 15-25 feet; dense foliage throughout; thick bark developing

Reduce watering frequency; minimal fertilization needed due to nitrogen-fixing ability; prune only for shape; monitor for pests

4

Flowering

6-8 weeks, typically spring to early summer

Tree produces abundant bright yellow, pea-like flowers clustered along branches; highly ornamental; attracts native birds

Ensure adequate sunlight for optimal flower production; do not over-fertilize with nitrogen; allow flowers to develop naturally; maintain consistent care

5

Fruiting & Seed Production

3-4 months from flowering to seed maturity

Long, narrow seed pods develop where flowers were; pods mature from green to brown; each pod contains multiple hard seeds

Allow pods to dry on tree for seed viability; collect mature brown pods for seed propagation; protect young seed pods from damage; maintain tree health

Companion Planting

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Plant with:

Avoid planting near:

Invasive species like Fountain grass Aggressive nitrogen-fixing non-natives Australian tree fern in poor-draining sites

Common Pests

  • Spray with water to dislodge; use neem oil or insecticidal soap; increase humidity around tree

  • Monitor for leaf damage; remove affected branches; allow natural predators to control; avoid broad-spectrum insecticides that harm native birds

  • Spray with neem oil; use yellow sticky traps; encourage beneficial insects; improve air circulation

  • Prune heavily infested branches; spray with horticultural oil in early morning or evening; maintain tree vigor

Uses

🦋

Critical Native Bird Habitat

Wildlife

Mamane is the primary food source for endangered Hawaiian honeycreepers including the Palila and Amakihi species. The abundant flowers provide nectar and the insects attracted to the tree serve as essential protein for native birds. [source]

💊

Traditional Hawaiian Medicine

Medicinal

Native Hawaiians used various parts of the mamane tree for traditional healing practices and cultural ceremonies. The tree holds significant cultural and spiritual importance in Hawaiian culture. [source]

🏠

Ornamental and Shade Tree

Household

Mamane serves as an attractive ornamental tree with bright yellow flowers and provides excellent shade in tropical and subtropical landscapes. Its drought tolerance makes it valuable for xeriscaping and sustainable landscaping projects. [source]

🍳

Traditional Food Source

Culinary

Mamane seeds were historically consumed by Hawaiians and can be eaten when properly prepared. The seeds contain nutritional value and were traditionally roasted for consumption. [source]

🎨

Native Reforestation and Conservation

Craft

Mamane is extensively used in native Hawaiian forest restoration projects and conservation efforts to restore degraded ecosystems. Planting mamane helps rebuild habitat for endangered species and preserve Hawaiian biodiversity. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Collect seed pods in late summer to early fall when they turn brown and dry; harvest pods before they split naturally; extract and clean seeds; allow seeds to air-dry before storage; seeds can be stored in cool, dry conditions for several years; fresh seeds germinate better than old seeds

Fun Facts

  • 🌱 Mamane is endemic to Hawaii and found naturally only on the Big Island, making it a species of significant conservation importance
  • 🌱 The tree is a legume with nitrogen-fixing abilities, meaning it enriches soil with nitrogen and can improve degraded volcanic soils
  • 🌱 Mamane flowers are bright yellow and attract native Hawaiian honeycreepers that have evolved special bills to feed on the nectar; the Palila is almost entirely dependent on mamane for survival

Gardening Terms

New to gardening? Learn about terms used in this guide:

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