How to Grow Leucaena (Lead Tree) Cunningham

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Leucaena (Lead Tree) Cunningham

Leucaena leucocephala 'Cunningham'

tree

Cunningham is a cultivar of the Leucaena leucocephala (Lead Tree or Ipil-Ipil), a fast-growing tropical legume tree native to Mexico. It is valued for its rapid growth, nitrogen-fixing capabilities, and multiple uses including timber, fodder, and fuelwood. The Cunningham variety is particularly known for its improved growth characteristics and suitability for agroforestry systems.

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Example Leucaena (Lead Tree) Cunningham timeline · Pittsburgh, PA (Zone 6b)

Plant Leucaena (Lead Tree) Cunningham
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Leucaena (Lead Tree) Cunningham
Late summer into fall

Before the first fall frost (≈ Nov 8)

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Growing Conditions

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Sun: Full sun, 6-8+ hours daily; performs best in bright, unshaded conditions

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Water: Moderate water needs once established; tolerates drought well due to deep root system. Water regularly during first growing season to establish roots. Mature trees require minimal supplemental watering except in severe drought.

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Spacing: 120 inches

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Days to maturity: 180-365 days to significant height; begins flowering and seed production within 1-2 years

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Planting depth: 0.5-1 inch for seeds; transplants at same depth as nursery container

Soil

Type: Well-draining loamy to sandy soil; tolerates poor, degraded, and alkaline soils

pH: 5.5-7.5

Amendments:

Compost or aged manure for initial establishment Minimal additional amendments needed due to nitrogen-fixing ability Mulch to improve moisture retention in sandy soils

Growing Zones

Find your zone →

Thrives in tropical and subtropical zones 9b-13; sensitive to frost and performs best where temperatures rarely drop below 40°F (4°C)

9b 10a 10b 11a 11b 12a 12b 13a 13b

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Growth Stages

Seedling

3-4 weeks

Small plant with compound pinnate leaves and delicate stem structure; cotyledons visible initially

Keep soil consistently moist but not waterlogged. Provide bright light and protect from strong winds. Thin seedlings to prevent overcrowding.

Vegetative Establishment

2-4 months

Rapid height growth with increasing stem thickness; feathery compound leaves become more prominent; root system developing

Support with stakes if needed in windy locations. Water regularly during dry spells. Begin light pruning to shape form if desired. Monitor for pests.

Growth & Development

6-12 months

Tree reaches 15-30+ feet; develops strong trunk and lateral branches; dense foliage canopy forms

Reduce watering frequency once established. Prune to maintain desired shape and remove lower branches for clearance. Nitrogen-fixing nodules develop on roots.

Flowering & Fruiting

Ongoing in tropical climates; may be seasonal in subtropical zones

White to cream-colored ball-shaped flower clusters (pompoms) appear; develops flat pods containing 10-20 seeds

Minimal intervention needed. Flowers are visited by pollinators. Allow pods to mature and dry on tree for seed collection.

Maturity & Production

Years 2+ indefinitely

Full-sized tree (25-40 feet) with productive capacity for timber, fodder, and continuous seed production

Periodic pruning for maintenance and harvest of branches for animal feed. Tree tolerates heavy cutting and coppicing. Manage self-seeding if unwanted.

Companion Planting

Plan your garden →

Plant with:

Nitrogen-demanding crops (corn, cassava, vegetables) Other legumes Grasses for pasture systems Root vegetables Banana or plantain (in agroforestry) Citrus trees

Avoid planting near:

Sensitive native understory plants in natural areas (invasive in some regions) Crops requiring acidic soils in immediate vicinity Areas requiring native plant conservation

Common Pests

Use resistant cultivars like Cunningham; introduce natural predators; prune affected shoots; reduce plant stress with adequate water and nutrients
Hand-pick on small trees; encourage natural predators; neem oil spray if severe
Horticultural oil spray; prune heavily infested branches; maintain tree vigor
Increase humidity; spray with water; use miticide only if severe; improve irrigation

Uses

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Livestock & Animal Fodder

Culinary

Leaves and young pods are highly nutritious fodder rich in protein (up to 25% crude protein in leaves), making it valuable for cattle, goats, sheep, and poultry. Used extensively in tropical agroforestry for sustainable livestock feed production. [source]

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Fuelwood & Timber

Household

Fast-growing wood suitable for fuelwood, charcoal production, and light timber applications. Due to rapid growth rate and coppicing ability, it provides sustainable biomass for energy in tropical regions. [source]

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Traditional Medicine

Medicinal

Various parts used in traditional medicine systems for treating ailments including wounds, fever, and digestive issues. Contains bioactive compounds with potential antimicrobial and anti-inflammatory properties. [source]

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Nitrogen Fixation & Soil Improvement

Household

As a nitrogen-fixing legume, Leucaena enriches soil naturally, improving fertility for adjacent crops and reducing need for synthetic fertilizers. Leaf litter further enriches soil as it decomposes. [source]

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Agroforestry & Habitat

Wildlife

Provides shade, shelter, and food for wildlife; used in agroforestry systems to create productive multi-layered landscapes that support both human use and ecological function in tropical regions. [source]

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

Harvest Tips

Pods: Harvest mature, dry pods directly from tree or collect fallen pods for seed. Leaves/Fodder: Cut branches above a node to encourage regrowth; can be harvested 2-3 times per year. Seeds: Extract from fully dry pods and store in cool, dry conditions. Timber: Trees suitable for harvest after 5-7+ years depending on desired size. Best harvested during dry season when pods are fully mature and seeds well-dried.

Fun Facts

🌱 The Cunningham cultivar was specifically selected for improved palatability and pest resistance compared to wild-type Leucaena, making it superior for livestock feeding.
🌱 Leucaena can grow 3-4 meters (10-13 feet) in a single year under optimal conditions, making it one of the fastest-growing tropical trees.
🌱 The tree is considered invasive in some regions due to its aggressive spreading; in Hawaii and Australia it has become a major ecological concern, though the Cunningham cultivar is less prone to uncontrolled seeding in managed systems.

Gardening Terms

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

Cultivar Full Sun pH

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