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Northern Water Milfoil

Myriophyllum sibiricum, Haloragaceae

Zones
3–8
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast

Guild Roles

Beneficial Insect HabitatDynamic Accumulator

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

High (established)High (seedling)

Soil pH

6 – 8

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Golden Calla LilyZantedeschia pentlandii
Pollinator SharingBeneficial Insect Habitat
Four-leaf Mare's-tailHippuris tetraphylla
Beneficial Insect HabitatWind Protection

Antagonistic Plants

Variable PondweedPotamogeton gramineus

Dense watermilfoil growth creates light-limited conditions that inhibit pondweed establishment and growth

Pygmy Water LilyNymphaea tetragona

Dense Myriophyllum growth can outcompete water lilies for light and nutrients, often forming thick mats that shade surface vegetation

Snailseed pondweedPotamogeton spirillus

Dense watermilfoil stands create low-light conditions underwater that inhibit smaller pondweed species

Uses

Functions

Water FiltrationOxygenationHabitat CreationNutrient Cycling

Common Questions

What zones does Northern Water Milfoil grow in?

Northern Water Milfoil grows in USDA hardiness zones 3 through 8.

What are good companion plants for Northern Water Milfoil?

Good companions for Northern Water Milfoil include Golden Calla Lily, Four-leaf Mare's-tail.

Design guilds with Northern Water Milfoil and see companion relationships visually.

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