Achillea millefolium
 Achillea millefolium californica
 Achillea millefolium
Achillea millefolium (Common yarrow) Achillea lanulosa
Common Name Yarrow
Latin Name Achillea millefolium californica
Family Asteraceae
Sunset zones / USDA zones A1-A3, 1-24 / 4-10
Type / Form Shrub / Small
Native Habitat Below 13,000 feet in North America
Soil Dry, decomposed granite, sand, clay loam low in organic content, well drained
Water Twice each dry month
Exposure Part shade
Height X Width 3 feet X 3 feet
Protective Mechanism None
Leaves Green, deciduous
Flowers White to near white, sometimes pink, flat topped cluster of small flowers from mid-spring to early winter, fragrant
Bark / Roots  
Maintenance Low
Propagation Seeds, rhizomes (somewhat invasive)
Pests and diseases Aphids, powdery mildew, rust
Landscape uses Rock garden, low maintenance, foliage accent, cut flowers
Garden Suitability Fragrant, Mountain, Thornless, Songbird
Ornamental Value White to near white, sometimes pink, flat topped cluster of small flowers from mid-spring to early winter, fragrant
Nature Value Attracts butterflies and birds
Native American Uses None
Links  
    Images http://calphotos.berkeley.edu/cgi/img_query?where-taxon=Achillea%20millefolium
    Image http://www.flickr.com/photos/squamatologist/2526998610/
    Images, and data http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=61
    Images, and data http://davesgarden.com/guides/pf/go/99330/
    Images, and data http://www.kingdomplantae.net/yarrow.php
    Images, and data http://www.finegardening.com/plantguide/achillea-millefolium-common-yarrow.aspx
    Images, and data http://www.swcoloradowildflowers.com/White%20Enlarged%20Photo%20Pages/achillea%20lanulosa.htm
    Images, and data http://www.mobot.org/gardeninghelp/plantfinder/Plant.asp?code=B282
    Images, and data http://www.ppws.vt.edu/scott/weed_id/achmi.htm
    Images, and data http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=61
    Images, and data http://www.floridata.com/ref/a/achi_mil.cfm
    Images, and data http://en.wikipedia.org/wiki/Achillea_millefolium
    Data http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200023010
    Data http://www.fs.fed.us/database/feis/plants/forb/achmil/all.html
    Data http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?Achillea%20millefolium
    Distribution, images, and data http://plants.usda.gov/java/profile?symbol=ACMI2
    Nursery, images, and data http://www.laspilitas.com/plants/14.htm
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