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Western Yarrow

Achillea lanulosa, Asteraceae

Zones
3–9
Layer
Herbaceous
Lifespan
Perennial
Growth
Moderate

Guild Roles

Dynamic AccumulatorPollinator AttractorBeneficial Insect HabitatPest ConfuserGround Cover

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6 – 8

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Szechuan LovageCnidium officinale
Pest DeterrentBeneficial Insect Habitat
Curly-top GumweedGrindelia squarrosa
Pest DeterrentPollinator Sharing
Diviner's SageSalvia divinorum
Pest DeterrentBeneficial Insect Habitat

Antagonistic Plants

Japanese ButterburPetasites japonicus

Japanese Butterbur's aggressive spreading and allelopathic compounds can suppress yarrow and other herbaceous perennials

Uses

Functions

Medicinal PlantSoil StabilizationPest ManagementPollinator Habitat

Edible Parts

FlowersLeaves

Medicinal Uses

Wound HealingFever ReductionDigestive SupportMenstrual RegulationAnti-Inflammatory

Common Questions

What zones does Western Yarrow grow in?

Western Yarrow grows in USDA hardiness zones 3 through 9.

What are good companion plants for Western Yarrow?

Good companions for Western Yarrow include Szechuan Lovage, Curly-top Gumweed, Diviner's Sage.

Design guilds with Western Yarrow and see companion relationships visually.

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