Description
Leucaena leucocephala is used for a variety of purposes, such as fencing, soil fertility, firewood, fiber, and livestock fodder.
Its inflorescence is a cream-coloured puff with many stamens. They produce flat and straight seed pods measuring 13–18 cm long that matures from a green colour to a brown; one pod contains between 15 and 30 seeds.
The legume provides an excellent source of high-protein cattle fodder. However, the fodder contains mimosine, a toxic amino acid. Horses and donkeys which are fed it lose their hair.
Germination Guide
🌍 Southern Mexico and Northern Central America
Moderate
Leucaena leucocephala is a fast-growing legume native to southern Mexico and Central America. Seeds have physical dormancy due to hard seed coat but germinate readily after scarification. Optimal germination achieved with mechanical scarification or hot water treatment followed by high temperature regimes.
Germination
Germination time
Expect germination in
5 – 11 days
Temperature
Min 15°C
Ideal 35°C
Max 40°C
🌡️ Temperature alternation recommended
— Alternating day/night temperatures optimal: 35/25°C gives 92-98% germination; 30/20°C also highly effective.
Substrate moisture
💧💧 High
Sowing depth
Lightly covered
Seed Pre-treatment
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💧
Soaking — 12 hours
Soaking in room temperature water for 6-12 hours after hot water treatment or cold water soaking for 12 hours at 24°C.
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🔨
Mechanical scarification
Mechanical scarification by clipping or nicking seed coat achieves 97.8% germination. Hot water at 80-90°C for 2-3 minutes achieves 84-92% germination.
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📋
Additional notes
Seeds possess hard, impermeable seed coat requiring scarification. Untreated seeds show only 2-10% germination.
Substrate & Container
Recommended substrate
well-draining seed mix or filter paper moistened with water
Recommended container
open-ended containers or tubes to prevent root-binding
Growing Tips
Seeds have high water requirements and germination is sensitive to water stress. Light requirement present. pH range 4-9 suitable. High humidity beneficial. Seeds can remain viable 10-20 years. Inoculation with Rhizobium bacteria recommended for optimal growth.
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