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Achillea Millefolium Var.Occidentalis Western yarrow

Previous scientific name(s): Achillea angustissima, Achillea aspleniifolia, Achillea eradiata, Achillea gracilis, Achillea lanulosa

 

Formerly known as Achillea lanulosa. Drought tolerant native forb with small flat flowers in clusters. An aggressive species used for erosion control. Commonly found throughout the U.S. in open fields or meadows and along roadsides. Tolerant of full sun, blooms spring to fall. Slightly taller than Achillea millefolium, var. occidentalis has been naturalized to North America.

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Species Attributes

Height:

12 - 18 in.

Life Form:

Perennial

Native or Introduced:

Native

Season:

Sun & Shade Tolerance:

granite seed sun and shade tolerance icon

Elevation:

ft.

Precipitation:

Low - Wetland adapted

Soil Texture
Coarse:

Average

Moderately Coarse:

Best

Medium:

Average

Moderately Fine:

Marginal

Fine:

Not Adapted

Soil pH
Acidic:

Marginal

Neutral:

Best

Basic:

Marginal

Seeding Rate:

1 PLS lbs/Acre

Pure Seed per Bushel:

37.40 lbs.

Seeds per Pound:

2,770,000

Germination Time:

Days

Blooming Season:

Spring Summer Fall

Mycorrhizal Dependent:

Yes

Bloom Color:

White

Variety:

Columbia
Eagle
Yakima
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