Swaziland's Alien Plants Database

Eichhornia crassipes (Mart.) Solms-Laub.
PONTEDERIACEAE
Water hyacinth
Invasive, Swaziland Status Unknown
Origin: Tropical S America
Growth Form: Aquatic herb
Plant Description: Plant: Perennial, aquatic plant, free-floating or anchored in shallow water, usually 100–200 mm high but up to 1 m when growing in dense mats; roots of floating plants long and feathery. Leaves: Shiny, dark green, in rosettes, erect with distinctive, swollen, bladder-like petioles. Flowers: Pale violet or blue, in 8–10 flowered spikes, each flower measuring about 50 mm in diameter, upper petal with a prominent dark blue, yellow-centred patch, November–April. Fruit: Capsules with very fine seed.
Key Features:
Control: Biological: Effective agents available. Chemical: Herbicide.
Comments: Possible

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