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Horned Pondweed

Zannichellia palustris, Potamogetonaceae

Zones
3–10
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast

Guild Roles

Ground CoverBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

High (established)High (fruiting)High (seedling)

Soil pH

6.5 – 8.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

White SnowflakeNymphoides humboldtiana
Shade Provision
Small-flowered Water PoppyHydrocleys parviflora
Shade Provision
California Giant BulrushScirpus californicus
Wind ProtectionPhysical Support
Small PondweedPotamogeton pusillus
Nutrient AccumulationBeneficial Insect Habitat

Antagonistic Plants

Red Stem MilfoilMyriophyllum mattogrossense

Milfoil allelopathic compounds can suppress the growth of other submerged aquatic plants including horned pondweed

Uses

Functions

Water FiltrationErosion ControlHabitat CreationOxygen Production

Common Questions

What zones does Horned Pondweed grow in?

Horned Pondweed grows in USDA hardiness zones 3 through 10.

What are good companion plants for Horned Pondweed?

Good companions for Horned Pondweed include White Snowflake, Small-flowered Water Poppy, California Giant Bulrush, Small Pondweed.

Design guilds with Horned Pondweed and see companion relationships visually.

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