• Common Name : Japan jabara / Water hyacinth

• Scientific Name : Eichhornia crassipes

• Family : Pontederiaceae

• Life cycle : Perennial

• Morphological characters : Stem – The stem is erect and bears the flowers.

•Roots – Masses of fine branching roots hang underneath the floating plant. The plant is propagated by seeds and vegetative offshoots

•Leaves – are green to dark-green, round to oval, and glossy with leathery blades. The leafstalks (petioles) are thick and spongy and contain some amounts of air that enable the plant to float.

•Flower – are blue-violet or lilac, large, and attractive. They have six petals and one bears a yellow spot.

•Propagation : By Fragments.

• Agricultural importance : The weed forms a dense mat that interferes with the flow of water in irrigation canals. It competes with rice for soil nutrients reducing the yield when left uncontrolled. Water hyacinth is the most damaging aquatic plant worldwide.

• Uses : Water hyacinth can be used as feed to swine and water buffaloes, mulch, and compost material.

• Control measures : Biological control with the use of weevils.