Achillea millefolium var. occidentalis

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.

Varieties: 
Columbia
Eagle
Yakima

Species Attributes

Height: 
12 
- 18 
in.
Life Form: 
Perennial
Native or Introduced: 
Native
Precipitation: 
Low - Wetland adapted
Sun & Shade Tolerance: 
Full Sun
Elevation: 
ft.

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: 
PLS lbs/Acre
Pure Seed per Bushel: 
37.40 lbs.
Seeds per Pound: 
2,770,000
Germination Time: 
Days
Mycorrhizal Dependent: 
Yes
Bloom Color: 
White
Blooming Season: 
Spring
Summer
Fall