Skip to content

Subabul (Leucaena leucocephala) as bee forage

Subabul (Leucaena leucocephala) is a fast-growing leguminous fodder and biomass tree planted across India on field bunds, in avenue plantings and as a silvi-pasture species. It is recognised in apiculture literature as a useful nectar and pollen source for managed honeybees and is one of the supplementary forage species listed for commercial apiaries in southern India.

Principle

Productive beekeeping requires continuous availability of nectar and pollen within bee flight range. Subabul flowers in cream-white globose heads that attract a wide range of generalist insect pollinators, including the native Apis cerana indica and the introduced Apis Mellifera. Its long flowering season and amenability to coppicing make it useful as an off-season forage between major crop flows such as mustard, sunflower or eucalyptus.

Implementation

Subabul is planted from seed or stem cuttings on bunds, around homesteads, or in dedicated fodder rows. The plant tolerates pruning and regrows rapidly, allowing repeated cycles of leaf harvest for cattle fodder with flowering shoots left to support bees. Commercial apiaries within flight range (about 3 km) of subabul plantings gain a measurable extension to the colony's foraging window during the dearth period.

Adoption context

TNAU's apiculture extension lists subabul as a bee forage tree suitable for commercial apiaries. Peer-reviewed bee flora studies in Tamil Nadu and the Merveille ecorestoration site near Puducherry record Leucaena leucocephala among the seasonal forage species visited by Apis cerana, alongside several native and introduced bee plants. The tree's secondary uses as cattle fodder and biomass fuelwood mean that planting decisions are usually justified on multiple grounds rather than for beekeeping alone.

Limitations

Subabul leaf contains mimosine, a toxic non-protein amino acid, which is relevant for fodder use but does not affect its value as bee forage. The tree is considered weedy in some agroecologies and is restricted in parts of the world; in Indian conditions, however, it is widely planted under farm forestry.

See also: Apis Mellifera, Apiary Management Commercial, Langstroth Hive Box.

References

  1. Apiculture: Bee Flora and Pollination of Crops. TNAU agritech portal.
  2. Leucaena leucocephala. India Biodiversity Portal.
  3. Nectar and Pollen Resources of the Honey Bee Apis cerana in Merveille, an Ecorestoration Site near Puducherry, Southern India.