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Giant Vallisneria

Vallisneria gigantea, Hydrocharitaceae

Zones
8–11
Layer
Ground Cover
Lifespan
Perennial
Growth
Fast

Guild Roles

Ground CoverBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (preferred)

Water

High (established)High (seedling)

Soil pH

6 – 8.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Asian FrogbitHydrocharis dubia
Shade ProvisionBeneficial Insect Habitat
Small Floating HeartNymphoides geminata
Physical SupportBeneficial Insect Habitat

Antagonistic Plants

Spiny HornwortCeratophyllum echinatum

Ceratophyllum species produce allelopathic compounds that can inhibit the growth of other submerged aquatic plants including Vallisneria species

Curly-leaf PondweedPotamogeton crispus

Curly-leaf Pondweed may release allelopathic compounds and compete for light with Giant Vallisneria

Red Stem MilfoilMyriophyllum mattogrossense

Myriophyllum species release allelopathic compounds and compete aggressively for light with other submerged plants like Vallisneria

Gibbous DuckweedLemna gibba

Dense duckweed coverage severely limits light penetration to submerged plants like Vallisneria

Uses

Functions

Water FiltrationOxygenationErosion ControlHabitat Creation

Common Questions

What zones does Giant Vallisneria grow in?

Giant Vallisneria grows in USDA hardiness zones 8 through 11.

What are good companion plants for Giant Vallisneria?

Good companions for Giant Vallisneria include Asian Frogbit, Small Floating Heart.

Design guilds with Giant Vallisneria and see companion relationships visually.

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