Species

Achillea millefoliumCommon Yarrow

34 other cultivars

perennialN. America Native

Sonoma Coast Yarrow

Achillea millefolium 'Sonoma Coast'

The Story

Plant Bio

Sonoma Coast is known for its strong, upright stems and fern-like leaves, making it a versatile perennial.

This cultivar is particularly resilient and has a longer blooming period compared to other Achillea varieties.

Uses & Benefits:

Achillea millefolium Sonoma Coast offers silvery foliage and clusters of white flowers, adding texture and color to garden borders.

Its drought tolerance makes it ideal for water-wise gardens and xeriscaping.

Provides nectar for pollinators like bees and butterflies, supporting local ecosystems.

SpeciesAchillea millefoliumCommon Yarrow

Essentials

At a Glance

Plant Type

Perennial

Height

12 inches

Width

24 inches

Light

Full Sun

Zones

4, 5, 6, 7, 8, 9

Water

Low to moderate

Humidity

Average

Lifespan

Perennial

Native To

Western North America

Toxicity

Toxic to dogs, cats, and horses

Bloom period

Early summer – Late summer

In flower about 3 months of the year

Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Mist cuttings regularly to maintain humidity during root development.
Water deeply once a week during dry spells to encourage healthy growth.
Apply a balanced fertilizer in early spring to promote flowering.
Divide mature plants in early spring or fall to rejuvenate and propagate.
Mulch around plants to retain moisture and suppress weeds.

Pro Tip

Plant in full sun with well-draining soil for vibrant blooms and healthy growth.

Keep It Thriving

Care Guide

Do

Water deeply during prolonged dry periods 🌱
Prune after flowering to encourage bushier growth
Apply organic compost annually for nutrients

Don't

Avoid overwatering which can cause root rot ❌
Don’t prune in late fall or winter
Refrain from using chemical fertilizers excessively

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Fertilize
Plant
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Silver-foliaged borderDrought-tolerant flower bed

Companion Plants

Lavender Echinacea Salvia CoreopsisYarrow

Multiply

Propagation Methods

Good to Know

Common Questions

Sonoma Coast Yarrow questions

What zones can Sonoma Coast Yarrow grow in?

Sonoma Coast Yarrow is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Sonoma Coast Yarrow deer resistant?

Yes — Sonoma Coast Yarrow is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Sonoma Coast Yarrow bloom?

Sonoma Coast Yarrow typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Sonoma Coast Yarrow need full sun?

Sonoma Coast Yarrow does best in full sun (6+ hours).

Is Sonoma Coast Yarrow drought tolerant?

Yes — once established (usually after the first full season), Sonoma Coast Yarrow handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.