Water Hyacinth

Eichhornia crassipes, Pontederiaceae

Zones

8–11

Layer

Aquatic

Lifespan

Perennial

Growth

Fast

Guild Roles

Dynamic Accumulator

Growing Conditions

Sun

Partial Sun (acceptable)Full Sun (optimal)

Water

High

Soil pH

5.5 – 8

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Water ChestnutEleocharis dulcis

Nutrient AccumulationBeneficial Insect Habitat

Antagonistic Plants

American EelgrassVallisneria americana

Water hyacinth's dense growth blocks light needed by submerged American eelgrass and competes for nutrients

DuckweedLemna minor

Dense water hyacinth mats block light needed by duckweed and may release growth-inhibiting compounds

Water FernAzolla filiculoides

Water hyacinth's dense canopy blocks light needed by water fern and releases allelopathic substances that inhibit nitrogen-fixing plants

Spotless WatermealWolffia arrhiza

Water hyacinth completely blocks light needed by tiny watermeal and releases compounds toxic to small floating plants

Yellow Flag IrisIris pseudacorus

Water hyacinth can shade yellow flag iris and may release growth-inhibiting compounds

Water CaltropTrapa natans

Water hyacinth blocks light needed by water caltrop leaves and may release inhibitory compounds

Powdery ThaliaThalia dealbata

Water hyacinth can shade powdery thalia and may release compounds that inhibit emergent plant growth

American Water-WillowJusticia americana

Water hyacinth can shade American water-willow and may release growth-inhibiting compounds

Swamp LoosestrifeDecodon verticillatus

Water hyacinth can shade swamp loosestrife and may inhibit growth through allelopathic compounds

Hardy Water LilyNymphaea odorata

Dense water hyacinth mats shade water lily leaves and may release compounds that inhibit lily growth

TaroColocasia esculenta

Dense water hyacinth can shade wetland taro and may release compounds that inhibit taro growth

Water PlantainAlisma plantago-aquatica

Water hyacinth can shade water plantain and may release compounds that inhibit emergent plant growth

Uses

Functions

Water FiltrationNutrient Removal

Common Questions

What zones does Water Hyacinth grow in?

Water Hyacinth grows in USDA hardiness zones 8 through 11.

What are good companion plants for Water Hyacinth?

Good companions for Water Hyacinth include Water Chestnut.

Design guilds with Water Hyacinth and see companion relationships visually.

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