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Whorled Water Milfoil

Myriophyllum verticillatum, Haloragaceae

Zones
3–10
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast

Guild Roles

Beneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

High (established)High (seedling)

Soil pH

6.5 – 8.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Arrow-leaf pond lilyNuphar sagittifolia
Shade ProvisionBeneficial Insect Habitat
Round-leaved PickerelweedPontederia rotundifolia
Beneficial Insect HabitatPollinator Sharing
Waterthread PondweedPotamogeton diversifolius
Beneficial Insect HabitatPollinator Sharing

Antagonistic Plants

Brazilian WatermilfoilMyriophyllum brasiliense

Closely related Myriophyllum species compete for the same ecological niche, with Brazilian watermilfoil often displacing native whorled watermilfoil

Ussuri Water MilfoilMyriophyllum ussuriense

Invasive Ussuri watermilfoil outcompetes native whorled watermilfoil through superior growth rates and resource acquisition

Uses

Functions

Water FiltrationErosion ControlHabitatOxygen Production

Common Questions

What zones does Whorled Water Milfoil grow in?

Whorled Water Milfoil grows in USDA hardiness zones 3 through 10.

What are good companion plants for Whorled Water Milfoil?

Good companions for Whorled Water Milfoil include Arrow-leaf pond lily, Round-leaved Pickerelweed, Waterthread Pondweed.

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

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