open places, dry slopes in Chaparral and Sage Scrub, rocky places at the base of cliffs
December to July
Golden yarrow is a very common plant which blooms from January through August in a variety of habitats.
The bright golden yellow flower heads contain individual ray and disk florets in crowded clusters at the ends of erect stems. The individual flowers are 1/8 to 1/4 inch diameter, and the combined flower heads are usually around a half inch in diameter. At the beginning of bloom the flowers are white. The narrow linearly divided leaves are found alternating on the stem and are 1/2 to 1 1/2 inches long. Underneath the green topside the leaves are woolly. The base of the plant produces many gray and woolly stems.
Golden Yarrow's genus name Eriophyllum means "woolly-leafed". The species name confertiflorum means crowded flowers. The Santa Monica Mountains also support a related plant which looks similar except with white flowers, Common Yarrow or Achillea millefolium.
Wildflowers of the Santa Monica Mountains, by Milt McAuley Flowering Plants: The Santa Monica Mountains, Coastal and Chaparral Regions of Southern California, by Nancy Dale Images Botanical Terms for Leaves
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